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.
The stud was way worse but any ideas or advise on this? This is the bolt arp sent me to replace the stud