The engine is standard 3.2L Jaguar AJ6, I've yet to work out how I'm going to weigh it and find the CoG, but with suitable levers there is always a way.
Initial Digitised AJ6 engine model
edit: got the garage cleared, and noticed how big the engine is (Huge!), its going to be interesting getting this all together into a vehicle. First job is to get it stripped and order parts before they become impossible to locate, thats if the liners are in good condition.