Originally Posted by Wizard1183
GM built the car to compete with what you're talking about (100-300k supercars) which is basically euro cars. Had they wanted to obliterate the competition, it'd be impossible with a 5th gen. That's why they have the Vette. Thats GMs REAL track monster unless your competition is ford or dodge.
The Z/28 wouldn't lose against a 300lb difference on the track even if the ZL-1 had 305s. It was built to be dominant and tires alone will not make up the 3 seconds on the track tested at. 3 seconds is a loooooong time when you're talking track time.
On the BMW M3 a square setup takes about 3-4 seconds off of a lap time, So depending on the car and suspension setup yes it can.