Has anyone used dual tube glasspack style mufflers? They are supposed to be more quiet than regular glasspacks. Also Summit Racing sells a header back dual exhaust setup from dynomax. I am waiting to hear back on where the pipes exit but I am curious if 2 1/4" is too small for a fairly stock 350. Thanks for the info..

Bill

 

I have never used them, nor do I know anybody who has. However on the 2 1/4" question, I feel compelled to answer. I think it is too small. I would go with at least 2.5" if not 3". You may not need the 3" right now, but if you ever do any mods to the car, you might want to then and at least it will be all ready done.

 

Wouldn't 2.25 be fine if it were dual pipes going all the way back? that's more cross-section than the standard 3" single pipe most of the aftermarket exhausts have...