[Boofneenee]

I dunno... from all the reading I have done on exhausts headers + A tune is by far the best way to net some gains and help with that dreadful tq dip. WIth a tune being the most important add on.

But, I just feel like you are going to be robbing yourself of some power and breathe-ability if you open up the headers with a mod and leave the rest of the exhaust (all 80% of it) stock with its stock size diameter and such. I feel this is especially true with respect to the OP/DP. Air is going to come sailing out of that engine through the headers and then come to a slow down right from its exit. Not to mention the stock muffler likely acts as a bottleneck.
I dont have any proof or dyno's to support this.. just my thoughts. I would be willing to bet the stock exhaust (except for headers) will sound more quiet than with an after market stock which is good.