I pass a rope twice around the engine passing through the mounting bolt holes and hang the rope (i.e. two strands) through the lifting hook. My engine and gearbox will go in together but you need the gearbox tail pointing down at 20 or 30 degrees then rotate as it goes through the bulkhead - this achieved with another bit of rope around the gearbox drive flange - it can be done single handed if you are well prepared. I REMOVE the cylinder head and rear two head studs to do this otherwise they foul the bulkhead. It will go in with a deep sump on - just - but equally it is possible to do it without sump and pop it on later, to do so you may need to raise the front of the engine fractionally. Don't forget to leave the handbrake off then it is possible to nudge the car back & forth to meet the engine.
If you are able to do this without the radiator in it limits the scope for awful mishaps somewhat.
If you are able to do this without the radiator in it limits the scope for awful mishaps somewhat.