i think im goin to get a set of headers but have a few questions. the ones im looking at says 99-05 will these work on my 06? and if i get the headers and y-pipe can i run my stock exhaust behind that for the time being? should it bolt up basically?

 

should bolt right up as long as you get the ones for your app. you've got a 4.8 or 5.3? make sure you buy the ones with the y.... if you have a 6.0 make sure you get the dual pipe kit.

 

should i use the stock header gaskets or the ones that came with it

 

stock.

What the General uses as OEM equipment is the best for quality, function and longevity. That is the rule far more often than the exception.