I have a 01 gmc 5.3 with intake, superchip programmer, 2.5 inch dual exhaust with no cats and flowmasters. I am going to put headers on and want to change mufflers also. Which header and muffler set up should I use with 2.5 inch pipes and no cats.

 

Some Magnaflows and a set of these.

 

Those headers look great, can't wait to get mine. Should Be 7-10 days.

 

pacesetters are nice bang for the buck headers...

thorleys, togs, ASM's and stainless works all work on these trucks also but those are 400-800bucks a pop...

im not sure how long pacesetters last either with their good looks. I know the ones on the cars suk after a year or 2 since their finish wears off big time

i bought my asm's used and they still look new

 

Don't forget Dynatechs. I just put a complete system, including hi-flow cats and X-pipe, on my Corvette. The whole set cost $1195 delivered to my door. It's a great looking product and the fit is top-notch.

I've had the titanium-ceramic coated TOG's on my Avalanche for three years now and they still look like they did when I put them on. They are pricey if you buy them new but I watched the Forums for a while and bought mine used (returned to the original purchaser from TOG after he sent them back for coating) for $500.