Looking into these pretty soon, but first i'd like to know some of the specs on the headers before i drop the dough on them. I'm ok with 1 3/4 Primaries, but if the Collector is 2.5 that definitely is not going to fly.

Does anybody have these headers if so do you mind giving me some dimensions please ? Also what size is the Y-Pipe ?

 

I believe they're 2.5" collectors and then merge into a 3" single. It might take some work to fit your 6.2 catback

 

The collectors are 2.5". However, the real restriction is at the y-pipe. It is oval and inside the pipe so I couldn't get a measurement. But, roughly 2.75 before it flares back to 3.5" where it connects to the factory catback.

I still felt increased hp. But, I may upgrade the Y in the future.

 

Man that is fu#$in retarded, 2 1/2 collector on a 6.2L motor is ridiculous lol. Thanks for the info guys, I'm going the Pacesetter route and making my own Y-pipe.