Over bore: How far is too much ?

Brfore sonic testers were en vogue if the bores were bad enough, it went .060 over. The safe overbore by Mopar I think is .040. But it's been done a bunch of times. If you know this engine or it's owner and know it to be reliable, it's worth getting. If you dont know him but trust him, it's still an ok situation. If you were going to stick a 4" arm in it (or it had one already) then it must be sonic tested. For a stock stoke, I'd say if it's got some miles it's probably fine.