Well I mean vs it being something insignificant or not having happened at all. I'd be depressed af if my perfectly running cruiser needed a new engine all of a sudden. If the shop couldn't even get the ****ing tensioner installed correctly, not sure I'd be thrilled with them installing an...
Wait, they are removing the engine??
Is it possible for you to go take pictures of the routing of the wires, belts, etc?
Not sure I've heard of an oil pump failure on these engines before.