As I said, I am redoing my exhaust again. I know basically everything that I am going to do, have the 2 rear cats cut off (exhaust shop will do it if I pay him cash) use the stock Y-pipe, then 3" into my IMCO hot-rod muffler, then Yed out of that and 3" pipe into duals going behind the rear tires. The only thing that I have left to figure out is what I want for tips, I am going with 4"X18"stainless steel and either 15 deg slash cut or 45 deg angle. And either rolled or non-rolled. Would either tip be louder or sound diffrent that the other??
He is kinda what I am leaning towards, this is KickA$$'s setup

 

Well im on my 17th exhaust set up, and im sticking to this one! Even though i say that every time... But I had rolled tips, and I got a weird air noise from it... I would stick with regular tips.

 

I would say 4x18" or 4x22" angle cut tips cut at a 45 degree angle.