Now there's the XR GT Turbo which is considered to be a Mazda RX-7 FC3S.....I think they should make it's BRO....the RX-7 FD3S Twin Turbo with 280bhp....that would be cool.
I said it isn't too different from the FO8, I didn't say there was no difference.
Anyway, the difference is too small to bring a new car in the game just to have powerboost, which is silly anyway.
A1GP is quite similar to GP2/F3000, the FO8 is an F3000 type car.
Not to mention it would have to be licensed.