I'll throw my input here since I am selling a car that I put a lot of time and money into at a loss (suprise suprise). Honestly I wouldn't ever go overboard crazy modding a car like that again. I have 2001 z06 with a cold air intake. I plan on doing full exhaust and replacing the clutch with an LS7 unit and maybe a diff/gears eventually but that is the extent I will go. I do not want to do anything I cannot easily reverse. The z06 while slower than my trans am is a lot more fun to drive. Its more comfortable etc. The trans am will whip its ass but I can actually stand to drive the z06 on a regular basis as compared to the trans am.

To each is own but honestly what good is a 1000hp car? I looked at doing a build like that some time ago and after being in and around a few 700hp+ cars it starts to become a waste. The cars burn the tires off at upto 120mph..that may look cool but your not really going faster. You just have a big burn out machine...unless of course your rocking some massive tires. But hey its all in what you can put up with and enjoy. My trans am has a fairly large cam in it and a good tune so it doesn't surge but man it gets annoying going down the highway at 65-70mph at 3500rpms with a th400.

To each his own I suppose...