Recently my friend purchased a 99 LS1 and now has saved enough money for a whole exhaust system (headers, full cat-back, etc...) He has already decided to go with GMMG cat-back but can’t decide between KOOK's or QTP LT's. So he needs your help on deciding which headers to get. So please help him out thanks.

 

i love my QTP headers. Cant beat the SS finish. However, they suck when it comes to the y pipe. i have never had so many problems with one in my entire LIFE. with that said. i would still buy their headers again but have my own y pipe made. easiest LS1 header installation ive done. only had to remove the oil filter and they slide in.

 

Flip a coin. Both stainless. But said to be great headers.