curious:: what are you trying to achieve?
I don't know what your trying to accomplish but how I would do it:: I would remove the transmission, get a piece of cardboard large enough to cover the back of the engine, bolt the cardboard on the back of the engine, take a pencil and trace around the engine ( of course from the engine side) and you'll have an outline of the tranny. ( the transmission, not that kind of tranny), I know, I'm not funny. or if tracing it from the engine side isn't workable then, try putting engine oil on the mounting surface's of the engine and tranny and then bolt on the cardboard, that way you'll have an oil outline of where the engine and tranny mount together. like I said, I don't know what your trying to do.