my vote is for hooker. i was very satisfied with mine and it didn't rust or anything through a harsh winter, also its very cheap compared to the others.

 

I would never pay 600 and something bucks fors a catback but if money wasnt an option another vote for gmmg...

 

Borla looks nice and sounds good.

 

Get something stainless unless you live in paradise. I just went Z/28 hunting with my buddy and we saw 4 LS1's at a car dealership. 2 had flowmaster (aluminized steel) and 2 had stock exhausts (stainless). Guess which aluminized steel catback looked like you could poke a hole in the muffler with your finger?

-Dustin-

 

I get alot of complements on my Magnaflow system. I run SLP headers with no cat. Its stainless and can be found for around $350.