I have seen a few A-65 engines for sale recently at pretty reasonable prices as today's sometimes hefty pilots choose to upgrade their Cubs, Champs, Taylorcrafts, etc. to more powerful engines. Some of those engines are with accessories, some without, some have logs, some don't. If refurbishing (I didn't say overhauling) an A-65 for use in a homebuilt, are there any upgrades to any part of the engine or accessories that would be worth doing? Ignition, carb, oil pump, rings, anything? Or just get it up to speed like it came off the line in 1945?