427 425 HP 3904351, block is GM replacement block, has 7/16 dimple GM rod bolt rods, 11 to 1 TRW forged pistons, 6223 steel crank balanced ass. closed chamber square port 2.19 Int. 1.88 Exh. heads, Muncie 4 speed 3885010, 410 12 bolt posi housing code DC 1213G2 , rebuilt motor, trans new bearings , new brakes and wheel cly. none power drum, in primer because paint was cracking have all trim and front bumper just off for body work no rust my body man died from cancer so didn't get finished , car was ordered with bench seat from factory even though SS 4 speed good cloth int.