Good to know Earl. Thanks so much (and everyone else) for contributing to this thread. I'm a new diesel guy and the bug bit me hard. Got all conversion engines so far, but I'll surely get a purpose-built diesel soon enough. I have 7 engines that I can run with conversion heads. I'm still learning, but it's been fun so far. No failures as of yet. I plan to keep it that way if I can.
The easiest starters are AAC or ABC construction. The one lapped engine is a beat up basketcase that's been through some tough runs.