I would have removed the bonnet, landing panel (the panel that the bonnet catch is fitted onto), radiator and pipes, all electrical gear and at least the exhaust pipes, if not the manifolds......support the rear of gearbox and remove gearbox cross member or bracket, chain hoist onto top of block, usually proper eyes built onto the block for lifting, and take up slack on hoist.......remove engine bolts or brackets and lift it on out.
Tilt the motor and gearbox up at the front, dropping the back of the gearbox as low as possible and carefully forward until clear of the bay.....