71 demon 340 tips?

Unearthed a demon 340 from a neighbors yard that had been sitting ten years in the same spot. Working on dis-assembly and managed to get 6 pistons out so far (the others are soaking in ATF / penetrating oil). It has the forged crank, factory looking windage tray, etc. The question is what to look for and keep and what to update and throw away? Thanks!:twisted: