2REDSTANGS said:i think its 500 for a dyno tune at hitech
engineman312 said:i have to disagree with the guys that say a sixer with an exhaust sounds like ass. it just depends on what ppl do. i've gotten a lot of compliments on how my car sounds, and always get asked if its a GT... a stock GT though, lol. i did a dual exhaust adaptor with H-pipe and magnaflow catbacks, and kept the stock exhaust. it sounds great, even in higher rpms, although the highest i ever revved it was about 4000, lol.