NFSPS: Rear Wheel Drive Evo (Better than Ryo's Evo)
There are 2 versions of this mod, both included in the download. Feel free to try them both then delete 1 (or both, maybe someone did it better).
The first version only converts the car when necessary (drag and drift). I have given you a hint already as as to how I did this. The car will still be found under RWD in the showroom so you can select drift mode.
The other is a full RWD conversion. I don't recommend that one though unless you only care about powerslides.
I have also recreated Ryo's Evo for you, because I know someone is gonna want it.
I don't want to assault you with a wall of text so look at the readme for all the details and links to necessary software.
Have fun.
Update: I probably included other mods in the script originally because I didn't know how exporting worked so I redid the entire thing. I haven't tried installing yet but this should fix the 2 errors when installing.