I've managed to hit 160+ in a 87' TII with the stock turbo, Turbo Back RB exhaust with 3 1/4" DP, HKS intake, and the FCD. I was also at 6800 rpm in 5th gear but it still wanted to pull. Not sure exactly what speed above 160 because my spedo ends there.

 

I think my car could hit 200mph+. Especially if I let 5th gear go out to 9000rpm. I highly doubt the car will ever see those speeds though.

There was a video of a swedish guy doing 300km/h (190mph+) in a tunnel with a TO4R awhile back.

 

I will buy a 18" rims, with 265/30 rear , I calculate that I can reach (teorical) 326 kph it means 203.7 mph. @8000 rpm.

For make this I know that I need a lot of HP , I I think that the 2 rotors 13b can't produce it , but If I can reach 300 kph (187,5mph) I will be happye.

I have to race with a some serious cars here , like the Porsche Carrera GT . the Ferrari Enzo and some Ruffs, I know that they are cars meaby unbetables , but if my car can't run 300 kph , I can even race with them.