It ain't exactly stock. That thing eats chevy's and [bleep]'s hemi's.
Think of what it might do if it didn't have to exhale through $hitty cast iron manifolds.
Funny you should say that. He has them...they're getting coated. He bought a set of full lengh headers, but they hung too far below the frame and created some clearance issues. He lives in a town that is pretty much built into a hill and they would rub or be torn off on driveway entrances and pot holes.
He had to sell them at a big loss to be able to buy the shorter, custom set up.