I never said diff casing, round the part of the clutch housing where the starter motor sticks out then around the exhaust manifold this allows the engine to turn round if needed or moved from side to side as well.
Good luck with the diff casing.
Something to remember before putting the engine back in hook the speedo cable on makes it allot easier than trying to fit it when the engine is in
You didnt understand one of the reasons why you use the clinder head bolt is because you lift the engine and it naturally gets the clearance to get out the engine bay.
If theres a correct way to do something, why bodge it.
There is always more than one way, must not be closed minded to other methods I guess.