I have the Flowmasters and have to say they definately aren't very loud. They are deep, but at WOT, I really can't tell that much difference between the stock mufflers. I heard the IMCO's are pretty loud and deep. Corsa is nice too.

 

Only problem I see is engineering the strap-hangers... this could prob be done w/clamps w/hangers welded or bolted/strapped to them.....

Something like this..

Hangers

Supertrapp

 

I think you know my opinion! BORLA's! Send him over if he wants to hear them.