Rear Main Seal

even the stock 65 pan takes the right crank clocking to get the pan off with the motor in the car. Have you tried turning the crank or is it obvious that the pickup and pan shape prevents an easy slide out? Trouble with the engine hoist is that your back under the car with the motor slung and that is dangerous. Pick the motor up and wedge a 2X4 block under the motor mount for some physical support. Watch the distributor and the fan when you pick the motor up.