Debating on an slp full exhaust(with some mid-length headers, unk which ones will work with this company)) or a bassani full exhaust with the mid length's. I'm assuming that the both are about equal in performance and power, but Im thkg the slp sounds better from what Ive heard. What reduction in my 1/4 mile times can be expected, .5 or so, even though mm&ff shaved a second off a 97 or 98 auto GT a few issues back with a full slp set up. Dam_, thats pretty good!!!!!!!!!!!! Thought about a 05, but my car will be paid off in a short while, plus a full exhaust will put me at 300 flywheel hp anyway. If Im running 13.8 now, Im guessing a 13.2-.3 with the exhaust.