Probably Magniflo it all the way thru for happiness, stainless, last the rest of the truck life probably, probably the dual pipe setup, except for needing catz, an they are a perty good deal with the setup from them too. No regrets. You can really take on some exhaust headaches with headers. The stock are plenty good for torque off road and such, if not cracked don't fix em. Headers are more in line for Pro Comp Dragen monster RPM's. Some of the Imports have come with simi headers and work perty well for them, but if not stock, don't go there. You want nice sound and sweet performance mostly. Later a tune if you still desire more from it.