Houston54, if you haven't had em before you might want to rethink side pipes. I tried them with the 327 in my 54. Exited just ahead of the rear wheels. I always have the windows open, and found the noise intolerable, being so close to it. (OK if you have a/c and snugged-up windows, I guess, but who wants that in an old truck?) The pipes (2 1/4") run all the way to the back now. Doesn't look so cool but it saves the eardrums. Just a thought.
Also a friend had those Summits on a 68 Mustang and like DJ says they started out loud and it wasn't long before they sounded like he'd unleashed all the hounds of Hell. Might be worth paying extra bucks for a better product.
Christian
