This question comes at perfect timing, as I too am about to hoist my first engine with an OD attached. I searched the BB and could not find much info about pulling the engine/tranny with the OD as one unit. It sounds like the bell housing bolts are the way to go.... I just figured the head bolts were the sturdiest/best option, but I see how that method could disturb the seal on the gasket with a sudden and uneven detorque of the head bolts. I need to go out and see what options I have to attach to the left front of the engine and find that bolt on the bellhousing. I do not have a leveler for my hoist, so I'm hoping I can get by with a helper or two to tilt the whole assembly out. Any suggestions?