Anyone see this combo---does it pay to leave the OEM manifolds and powdercoat---into a true dual exhaust or install the headers????

Powder coating your OEM exhaust manifold makes it look really nice and clean however that is where it ends. If you are looking for that Factory look in the engine compartment then that is a good idea.

Headers are better. They add to the engine in HP, Torque and mileage. A good Ceramic coated set of headers will not only look nice they add to the engines performance. OEM Exhaust do the job and that is about all you can say about them.