For Chivas Autoart's Nissan Skyline BNR34 NISMO JGTC GT 500:
Please excuse the shitty PS2 texture quality on the window stickers.
Also includes a tuning set up which gives it 1200 BHP and a top speed of 245 MPH/400 KPH with stock settings, 269 MPH/432 KPH with the final gear maxed.
1) For the livery, go to your Assetto Corsa folder, then: content > cars > chivas_nissan_bnr34_jgtc_gt500_03 > skins, then take the speed_king_13 folder and drop it in.
2) For the tuning, go to content > cars, then take the chivas_nissan_bnr34_jgtc_gt500_03_Speed_King folder and drop it in.