Oh well, I'll play...
Based on an '88 Carrera... 3.6 Vram yada yada
Rear flares are Turbo early style (round complete t-bar hole, as opposed to the late style bigger half moon hole).
Front are 930 fenders. Rockers delete involved welding some small holes...
I have never seen the 74-on RSR flares with vents (13' wide) in steel. You can find the fiberglass replica at GT-racing.
The car is not it top form now (close encounter with a sidewalk and post)....
But I am working on making it better...