So this is a recreation of Rex's mod. It does require the original mod resources as it is a recreation of said mod *.esp file. I know he let permission for his assets (go see the mod page) but I felt I had at least to direct players to his page so you have to give him endorsement first. Because it's his idea, and his assets/use of free assets. I used them in my file but you still need the *.nif files. So you DL his mod and then mine to replace it. Don't forget to give your endorsement to him please.
As I said in short description, I'm waiting for Rex to answer my PM, but almost 3 years since the last connection, I'm not confident at all and I spoke with Nexus Staff to see if I could, under these circumstances, take over his file, they said I won't have the rights even if Rex is not going back. So this is really NOT a modification of his own file, I recreate it. I did that because I thought it was needed to be corrected but Rex did not let permission to modify his file. For example missing items or categories are readded, and completed with logical things, like derived ammo (AP, HP, SWC...) and weapon kits for "starting" weapons (9mm pistol, 10mm pistol, varmint rifle...). List of additions and corrections below.

I've made this, overall, for my OCD to stop bothering me, or at least lessen its attacks on my mind (it hurts you know) and figured out that some of you might as well be happy with a more complete version of this wonderful mod. Borderlands players, you may live in Nevada Wasteland now !

Also, for those who use Armour Repair Kits from Antistar (lucky you I've thought of you) I've made a version where you can buy those kits as
well. Because I use the mod of course.

Update n°1 (2020 March 1st - v1.1) : I corrected a little mistake in one of the original 10mm SMG kits which hadn't a bench attributed, as such, my derivations had this error and were invisible in the vending machine. I corrected another mistake from Rex where he said 10mm Ext Mags, but instead you could buy 10mm SMG Ext Drums, so I reset it to 10mm Pistol Ext Mags, and added a new line for 10mm SMM Ext Drums. Also for the ARK version the master was not correctly set and it crashed the game when hoovered on the list, I don't know why GECK doesn't want to add automatically mod to the master list. These errors is now corrected.

Update n°2 (2020 March 7th - v1.2) : I added gambler oufits and hats for my RP needs, I thought it was a good idea to share it. I also added formal wear. All kind of gambler hats were added, because I didn't know what was what in the game files (my game is in french) so I added the 5 types of hats, the unique variant only wearable by disguised hookers in the quest for Johanna and Carlitos are also added, but don't look different than other hats. Also some females and males variants look the same depending on your char sex. For suits, they do not differ very much, so you may just buy them to see which one you prefer. Prices are 10 PWM for outfits, 12 for Formal Wear, and 2 for the hats. Tell me if you think the prices should be different. Old 1.1 version still available for a time.

Requires only Old World Blues, like the original mod, and assets from said mod. For the Armour Repair Kit version, see just below.

Rex's mod which resources ARE needed : https://www.nexusmods.com/newvegas/mods/49332

Antistar Armour Repair Kits needed for the ARK version : https://www.nexusmods.com/newvegas/mods/36744

I recommend this mod, Antistar had a great idea, and his mod works wonderfully with all vanilla and modded armors. If you didn't know, go give it a try and give antistar some kisses. He'll be happy.

Installation :

You just unzip and put in Data, it will use Rex's mod resources and replace the *.esp (my additions/corrections are noted by "Duriel" at the end of the name in GECK/whatever software you could use to see what I added/changed, the records I redid are named  the same way Rex had named them). Alternatively use your favorite Mod Manager and let it do it for you. If you are asked if you want to replace a file, just say yes. If you switch from one version to the other, same thing, replace the file.

List of added things (comparison done with the original mod obviously) :

Armors and Apparel :

T51-b Power Armor and Helmet
Gambler Oufits - 4 types
Formal Wear (White Glove Society - some members wear it, Mortimer for example)
Gambler Hat - 5 types including the unique variant worn by hookers during the quest Bye Bye Love

Weapons :

9mm SMG
Caravan Shotgun
Lever Shotgun
Cowboy Repeater
Trail Carbine
Brush Gun
Light Machinegun

Mods :

9mm SMG kits : Drums and Light Bolt
9mm Pistol kits : Ext Mags and Scope
10mm Pistol and SMG Extended Magazines were confused by Rex, I corrected this and added missing 10mm Pistol Ext Mags in version 1.1

Ammo :

Almost all ballistic ammo derivations : AP, HP, SWC, JHP, JFP, Hand Load, and .38 and .44 Special version, as well as .50 Incendiary rounds, but neither other Bulk versions, nor versions of the shotgun shells. Let me know in comments if you want these to be added, I'll add them ASAP.
MCF, EC and ECP Over and Max Charge versions

Armour Repair Kit for 1 unit of prewar money, to stay true to Weapon Repair Kit exchange rate from Rex. I may change this up, like for 5 prewar money units later on, tell me if this seems like a good idea or not. I can't tell, as I'm a Hardcore survival crafter player, I always take wrenches and all junk to craft my own repair kits.

List of possible additions in the not so near future :

Compatibility for other DLCs in Vegas world map ;
Maybe machines in DLCs world map (not sure, depends on opinions and feedback) ;
Other corrections and additions for Vegas vanilla items (missing bulk ammo, weapons kits, maybe armors...) ;
I'm not sure yet for requests, I'm very busy so we'll see

Warning :
I may have failed to see some things, as I redid and reexamined the records using a combo of GECK and FNVEdit, to add my things after, I could have missed some things. Don't be mad at me and just tell me in comments.
As for ammo, if you want something to be added, tell me and I'll see what I can do. I may have added something in the time so stay tuned, I'll update the page accordingly.
Also, I didn't had problems with the placement of the machines, but if you need

The prices are almost the same, I just altered some to be logical with Rex's original idea, and for weapons and power armors, I made a fair price considering Rex's mod. (T45 is 900, the T51 is 1000 for example, it's not absolutely much more, but 100 pieces of prewar money are much more difficult to find when you already have 900 in your pockets).