Throw away everything except the block and crankshaft---maybe even get a new stroker crank assemlbly (cost effective) and a new set of aluminum heads, manifold and carb. At the very least you will need all the normal rebuild parts--gaskets, timing set, lifters/valve springs, pistons/rings, bearings----In a rotating assy you will get crank, rods, pistons/rings and bearings, even can be bought balanced---get a set of moderate aluminum heads and manifold and you can have the power your looking for---stay fairly conservative and it will even be drivable on the street