HP Manifolds

So all the previous being said, does anyone sell the needed cast manifolds, with appropriate mods completed or not, and is the price difference worth the effort? I would love to find a way to get the fumes outa the motor to somewhere under the car for a couple hundred bucks or so.

I was talking to my friend if he were will to liquidate these manifolds since he has a 78 mil spec truck with a small block. If he ever went to a big block he'd use the truck big block manifolds he has in storage. Problem is - no idea as to what these are reasonable worth. The driver's side is still stock and uncut.