Engine decking issue(help)

That's going to be a lot of grinding on that pump housing. I hope there's enough meat there.

I SWEAR it's things just like THIS that make guys switch to Chevy. Everything bolts right on those with no problems. It's really a wonder there are still as many Mopar guys around as there are, given the piss poor support we get.
Ehh..don't be a pussy. Those Chevy blocks crack, barely fit a 4-inch stroke... and yield a stomach sickening rod ratio.
I've run a factory bolt on that side before with no issue. Use the 12 point nut, torque it and then grind about half of it off... then clearance the pump body till it fits. the cylinder notching and the rest, as well.. were all laid out in the rags in the early mid 2000's w/mopar muscle ..mopar action..car crap, hotrod..