Make sure you know exactly what you want to be done to your engine. So when you take it to the machine shop you can tell them very very specifically what you want them to do. Because so far I have found very few machine shops that have a clue what to do with these engines, any way the best bet would be the guy that is just ready to retire. One note, you may not have paid much for the engine, but you can get a lot tied up in one of these quick.