well, here is a price idea for the internal portion of the engine. you will need a complete gasket set 100.00 -200.00, engine machining (overbore, honing, and align honing) a little more if you want the complete rotating assembly balanced 125.00-150.00, new pistons and all new rings in overbore sizes ~200.00. you can still use you crank and connecting rods if they are usuable. you will also need a complete bearing kit 50.00-100.00. most importantly, you dont just slap all these parts together, you will need many precision tools such as dial indicators, dial calipers, torque wrenches, etc. these prices i am giving you is just an estimate of what i think it would cost. you will have to call around to get an exact price.