what do you need for the loudmouth to bolt up to the y pipe on a 01 ws6? since the pipe size i think is different from the stock y pipe and the loudmouth. cause im selling it to my friend and he was wondering.

p.s. i think he might actually have a borla y pipe, so would that work too?

 

Loudmouth will bolt right up to the stock Y-pipe. Not sure about the Borla though.

 

Every aftermarket cat back that I know of is necked down to match the factory y-pipe and every y-pipe is necked down to fit the factory cat back.

 

That's what I was thinkin' too...

 

if there is a problem, drive to a muffler shop (open y-pipe, no cat-back, loud fun ride =)) and have them weld on a reducer or widen it, maybe 15 bucks?