Soak all bolts day before with duckoil or similar releasing fluid - wd 40 etc.
Drain cooling system and oil - leave to drain overnight if you like.
Disconnect battery.
Replace sump nut.
Remove exhaust downpipe, drain carb float bowl and remove fuel line, (plug the hole in the pump), remove choke cable and accelerator cable.
Remove cooling and electrical hoses and oil pressure gauge. Remove radiator to be sure you don't hit it, have to if you want to take it out through the grille if you have limited roof height in your garage - that's why I do it this way.
I unbolt my front panel, though you don't need to do this - and mine is kept well greased....
Loosen all your bolts a turn to the bellhousing and engine towers - if any get stuck, with everything still bolted up, it's much easier to put pressure on them without parts moving.
If bolts in towers are very stiff, DO NOT force them, apply some more releasing fluid and move then gently back and forth and wind them out like this all the way, you don't want to strip bolts with captive nuts.....
Attatch your hoist to the engine.
GENTLY take the strain, make sure nothing is going to fail under the weight - you can see old hoist creep under the strain if the seals are going off. Oh, and DONT use workshop roof beams to pull the engine unless you like being crushed by falling roof beams
If you are satisfied all is OK, just take the weight and slide the engine forward off the box splines and up and out!
Removal with the box is easier, (and a good opportunity to change your clutch parts like throw out bearings), but remember to disconect the prop, speedo cable and clutch linkage.