1969 Chevy C20 BLOCK based on casting number "3970010" = 1968 327 2bolt or 69-79 350. and type of oil filter: 1968 327 2bolt. EXHAUST MANIFOLD, based on casting number "3905364": 1968 307, 350 or 400 Truck. Probably the original 350. INTAKE MANIFOLD, based on casting number "3827184": CARB: Holley List Number = R84018-1. Date Code = 0842. model 4010 750CFM universal aftermarket marine carb. DWELL: 30 (typical of all GM, window type, distributers) TIMING: Checked 2006-03 it was 4ºBTDC about 24º w/ vac. advance (one source says 1967 327 - 6ºBTDC) SPARK PLUGS: AC Delco R44T. GAP: Transmision: Muncie 3 speed Manual (need to verify)