Year? (serial number? History? Trapdoor or non trapdoor? Matching crankcase numbers? Early or late crank and rods? Which year cylinders? Which model heads Single or dual carb cylinders Single or dual carb manifold and carbs? Linkert or Tilloson? Model? Cams letter designation Steel or alloy tappet blocks. Single or dual springs Steel or alloy spring covers Wico or FM mag? Horizontal or vertcal? Which transmission set? Alloy clutch hub? Pictures
Id 55, stamp in case 12/65 matching belly #, Ball bearing crank & cams, Trap door ,alloy covers 2 springs , j cams , fm vert. m53, #7 heads 60R I have pics but I cant get them to upload