It’s always a tough decision with how far to go. At this point I don’t plan on removing the heads for many reasons. Like
@87cr250r stated it can (and likely will) result in growth work. The precup chambers are probably cracked beyond spec, spring pressures, valve guides, probably end up decking the block, piston rings, bearings, etc. This is not a high performance engine so I don’t intend to give it that sort of attention at this point. The only reason I’m removing the intake is to swap out the injection pump and to best clean/seal the valve covers. I’m confident that the engine runs because the guy provided me with a video of it running, so it worked. The transmission didn’t get a full tear down and rebuild either for the same reasons. It doesn’t bother me terribly to pull either out in the future and do a complete rebuild if they are not operating correctly, so it comes down to mitigating risk. I appreciate the feedback, and we’ll see where she goes from here!