base from Forza 4, some parts from CSR and NFSUC / Modloader version replaces GTO / Add-on version incompatible with Modloader
Features:
Can be customized with:

Bodykits
Spoilers
Hood/rollcage combo
Rims
Paint
Vinyls (debug map included, custom Nismo stripe included)
Decals
Tinted windows

Other features:

Performance: +173 mph (+280 km/h) top speed -stock- / 231 mph (373 km/h) -upgraded-
LOD0 interior
Custom driver (werewolf)

Installation:
Modloader version:

Make sure you have the NFSMW Modloader installed
Move the ADDONS folder to your NFSMW folder. Delete any mod replacing GTO first.

Add-on version (make backups first!):

Make sure you have NFSMW Unlimiter installed first
Move the SKYLINE33R folder into NFSMW's CARS folder
Get Ed The Car Dealer to add the GLOBALB entries. To do so:
Move the SKYLINE34R.ini file to the ConfigNFSMW folder of Ed
Move the CARSELECT_MANUFACTURER_NISSAN.dds and SECONDARY_LOGO_SKYLINE33R.dds files to the ResourcesNFSMWFrontEndFrontEndTextures729181AD folder of Ed
Run Ed, open your NFSMW folder and click on the Add Cars button.
Using NFS-VltEd, import the the skyline33r.nfsms file and save
To use add-on cars you should either create a new savefile or patch your existing savefile with the Save Patcher and Save Editor tools. Patch the save first then open the save with the save editor and save it.

Used tools:
Zmodeler 1.07b & 2.2.6 | Forza Studio | NFS CarToolkit | Blender | GIMP | NFS TexEd | DXTBmp | NFSMW ModTools (with nlgzrgn's custom geometry compiler) | NFSU2 Texture Compiler (including ASC custom ARGB/DXT5 variant) | BinViewer | Notepad | NFS VLTEd | MWInside Model Recompiler
Copyrights/permissions:
If you would like to modify and/or distribute this mod, please:

keep this readme file without any alterations whatsoever (in case of just sharing this mod around)
give me proper credit (AJ_Lethal) for creating the mod
Seriously, respecting those conditions is not hard at all. Unless you're terminally dumb or a shameless, talentless hack.