[maxrpm]

If you look in my gallery you can see how I removed the super-restrictive mufflers. I cut the collector & used a stainless band clamp to re-attach the new pipe which by the way is a 4"dia. diesel truck stack. You could attach any muffler you want or put baffles in the pipes. But what I like best is there's no 3-bolt collector. Works for me. I tried posting the pic. here but I can't figure how. With no other modifications my car picked up 4.5mph at the dragstrip, and I can re-attach those quiet muffs in no time...if for some odd reason I wanted.