HI-PO Exhaust manifolds or Dougs Headers?

If you want the most out of your combo and any mods you may do later on down the road go with the headers. Other than being easeyer to install there is no real up side to manifolds. A set of headers will make a lot more power than even a set of HI-PO's will.

The Dougs are one of the better fitting headers out there. I would use them.