would running an aftermarket exhaust (skunk2) produce power gains if used with the stock header? or would you need to get a better flowing header to notice anything. thanks in advance

 

yea it will produce power gain by a little about 5-10 hp at the most wid stock header... but it would be better if you added a aftermarket header... addition 5-10 hp.... depends on the type you get you will either feel it in the low end or the high end of your powerband.... but nonetheless you will have better power gain....

also if you want to get more out of your exhaust system... consider 2.25 custom piping... that should help with some of the exhaust restriction.... another mod i can think of is getting the hiflow cat carsound....