Good news, my home made pin puller worked like a charm. Bad news, though the marks line up the chain appears to be stretched beyond what the tensioner can compensate for and I'm pretty sure I've got bent valves. Got everything together having replaced the broken guide and figured either the car would run or not run so I skipped the compression test. The car eventually started, chain made a hell of a racket and engine ran horribly, pouring smoke out the back. The only way the engine would stay running was with the pedal either halfway or floored; so looks like I'm pulling off the heads. I figure the chain jumped, the PO's mechanic lined everything back up and checked for bent valves then gave the PO an insane estimate. I'm starting another thread re head interchangeability.