Pipe Size?

It should work fine. It might not be the "best" for maximum power but its not like your leaving a ton of power on the table.

I feel that larger pipe has more of an echo effect thrown into the exhaust note. smaller 2" pipe seems to take that echo out of it some.

I'm actually running a full 2" system out of stock manifolds and into noname glasspacks behind my 318. I found it used for a good deal otherwise i think i would have went a bit bigger. It has a really nice sound.