what are the best headers to get? i have the edlebrock right now but i would like to get some long tubes. is it better to use AS&M headers or supermaxx? i have almost 90,000 miles on my '99 silverado is it almost time for me to get new cats?

 

I would say it is time to get new cats for sure. Headers, there are alot of choices for them. ASM, Thorley, Pacesetter, Dynatech supermaxx, and some others. They are all gonna produce similar power. You might wanna check into some thorleys tri y headers. There is a Group purchase goin on right now on another board.