Well if I had the car here I could figure it out for you, but what I would suggest is to use an engine pull and suspend it in the compartment then use a can of fome (you should be able to get it at a car audio place) and ooze it between the mount points and the frame, then pull the engine out with the fome on it, sand it down with some fine sand paper and send the shape to me and ill see what I can make for you, ill need the engine weight, for the stress analyses but it will probably be an easy make.