I got the car back on the street yesterday, and man the sound is great. I had 2 leeks I welded up last night made a big diff. I have a 305 that sounds bigger than it is. I lost a little on the low side, but all the other mods have come to life. I have a TPI car that pulls hard to about 5500 instead of the 4500 it was before. If you have done any intake mods and are debating headers stop and go buy some.