Spent some time tuning it, it's a fun car, but it should be quicker. I used PD's weight to calculate the spring rate and it seems to work great. I'm going to build another one using the actual weight to see if that makes a difference.
This isn't the first time PD has screwed up auto weight. The Lamborghini Miura weighs at least 700 pounds less than it should, the Volvo 240 weighs at least 1000 pounds too much , and apparently the Pontiac GTO and the old Camaro are both too light. Oh, Polyphony and your many inconsistencies and wrong numbers.