it needs to breathe, it's the Race engine out of my Satellite > 540
they are 64 max wedge manifolds
It was the only way to get them to fit> With-out Major fire wall surgery.
still had to move the master cylinder over> driver's side 3"
trying to plan ahead, for a turbo project
and the alternator was in the way, if left on the passenger side.
Made some temporary down tubes, for the exhaust system.