i think 7k is alot still! the kit on the website for the twin turbo c5 corvette is only 7k with two turbos ect... and the viper truck is around 8-ish i think about $4,500 to 5k would be a good price. at the most 5k like the GTO. i mean the turbos ain't that expensive about $1,200 for a good one like the t4 or t3. piping, pump, ect, i guess the tuning is expensive and well we do have crossfires so bump up the price because we can afford it huh! my friend has one of the nine series porshas and his body kit is about 5k i guess they figured if you have a nice car you'll pay alot. lol!