Ermm right.
Pulling and reinstalling a type 1 engine in an pre 72 is a piece of piss. Two trolley jacks one under the engine, one under the gearbox make lining things up easier.
You will also want a 30mm spanner. Put the vehicle in gear and rotate the crankshaft pulley nut with the 30mm spanner to help the engine mesh onto the spines onto the gearbox input shaft.
Whilst your engine is out it might be worth replacing your flywheel oil seal, it would be worth removing your clutch (remembering to mark the clutch and flywheel so you can put them back in the same place) and inspecting the pressure plate for wear.
It's also a good idea to clean out the gearbox bell housing, put a tab of grease on the input shaft and to lube up the thrust bearing mechanism.
It would also be a good idea to remove the fuel tank bulk head (remember there are screws underneath as well as on the side) and to check the condition of the breather pipes and filler neck. It would be good idea to replace all the fuel lines as well.
You may also want to replace your starter motor bush, its only a quid anyway.
It's also easier to set your tappets up with the engine out so its probably worth checking the gaps and fitting new rocker cover gaskets.
Would be worth checking the connections on the starter motor are clean and wires in good condition whilst your under there.
Remember to clean the threads on all the engine mounting bolts so they are easier to reinstall.
It's also a good idea to make sure everything is clean, make sure there isn't any crap that been sucked into the fan.
When you pull the engine remember to label the wires to the coil and distributor and make sure everything is disconnected (fuel and accerator cable are obvious, but have forgotten to disconnect heater cables a couple of times
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) And be careful not to lose the little doodahs that pinch the ends of the accerator and heater cables as they usually fall out when they aren't holding a cable tight.