Got a request to make a 600pp no performance parts ZR1 and had a lot of problems, but it's finally made. Right out of the box I bought the wrong Corvette lol and didn't realize it was the ZR1 till after I upgraded it already. Than I bought the right one and had the hardest time making it fast and controable. After quite a while I added the spoiler than put it to medium settings and that's all it was needing. It still can get tricky here and there, but as long as you watch your gas it can be a lot of fun. Like I said this exact request said no performance parts, but I recommend getting the best exhaust. You could buy it than decrease the power limiter to still make it 600pp or just leave it if you don't care. It makes the car sound so much better it's insane.
P.S. pics by Drainbread
Car
Chevrolet Corvette ZR1 (C6) '09
Drivetrain
FR
Horsepower
651HP/6400rpm
Torque
625 ft-lb/4000rpm
Weight
1221 kg
Miles
102.4
Performance Points
600
PARTS
All other parts except NO performance parts or chassis reinforcement. Add Spoiler and I'm using racing soft tires