Well, there's good and bad news...
The good news is that the RGT and TS020 are ready.
The bad news is that, as Heydu guessed, putting stock parts on from another car don't seem to help the ZZII much. All the parts now SAY normal, but the race rules still say "no"... Where' that man from Del Monte when you need him?
I think there's still a possibility, but it's going to take a while.
The ZZII will retain it's "stock" settings with everything removed, meaning it's still a very, very fast car. So it's driveable. And it has 570hp at the end of all this.