Bearings, rings, brush hone bores, reshim valve springs, touch up valve job, new seals, new gaskets of course, I go through carb every spring especially now that I’m running alcohol, new floats every two years, hopefully cam and lifters look good, clean flush and check roller lifters if running them, if in doubt send out for rebuild. I think that’s it. Ohhh and clean, clean, and clean again.