I recently removed the 327 from my Monte. It had brand new dual exhaust from the manifolds back put on a little over a year ago. The engine lacked power and oil practically poured out from it. After removing it to clean it up and put in new gaskets. I decided to put on some vortec heads I had lying on my bench. I did not realize the the vortec heads don't have the 7 bolt exhaust flange! Could I just leave out the last bolt on the passenger side on the #8 cylinders exhaust flange? I don't like headers that much and I would rather not have to have the exhaust redone again. I know these log manifolds aren't the best, but it's what I have.