I'm trying to find a good set of headers for my friends 99 gmc 5.3. Who makes a good full length header?

 

ARH, Stainless Works, LPP, OBX, Dynatech, Paceseter, probably a few more. Search some of those and you'll see all you need to know.

 

thanks I searched and found some!

 

Stainless Works has a Rebate Offer going on this month.

 

The website lists them for 03-06, but I know from personal experience that they will fit a 99 4x4, as long as you don't have AIR and delete the EGR I have an 02 PCM which doesn't have EGR, so I'm good to go there