Corsa touring if money is no issue and you're happy with 3". I'm looking at the Magnaflow 3 1/2" system designed for the Escalade EXT for my 09 Avy

 

+2 for corsa i had a magnaflow on my last truck and it was horrible how much drone at cruise. On my 08 vortec max i have a corsa sport and no drone at all at cruise but once you get on it its beautiful. honestly you tube will help alot in this decision because muffler sound is so subjective

 

Exhaust is all personal preference...

But on the intake, just get the Airraid MIT tube.. its about $95 and you keep your factory air box.

I like the really big magnaflows.. but dynomax is a good one also.
Might look into the proflow's, they are very mellow.

 

see i heard magnaflow wasn't bad for drone and flowmaster was awful for it at cruise... i cruise all around cause i travel so thats key

 

HOLLY COWWWW i heard the Corsa Sport on an avalanche and i just don't know if i can get away

 

Go ahead and spend the money....

 

Well what magnaflow sounds that good?

 

big 22 inch with 3.5 in/out is what i run without drone and sounds great....whoever has had drone with a magnaflow had to have been a 14 cause i doubt the 18 has drone....