I put a bolt in the rearmost position on a Fenton setup with the engine out of the truck. Otherwise it's a three-hand job to mount the manifolds and gasket. I left the bolt in. A short while later, with the engine in place, I needed to remove the manifold to fix a leak and had to grind a 9/16 wrench specially to be able to nibble away at that bolt. It would be next to impossible if the bolt was rusted in place or if the head was mushroomed. What with the grinder time and nibble time it turned into an all afternoon job. I did not put the bolt back in.
