[Andrew]

The cheap generic VW flywheel locks work great and cost almost nothing. California Import Parts and others will have them.
A guy in England makes repro Alfa flywheel locks. I just got one from him and it works great on various different flywheel sizes, but it's by no means essential.
Using a crowbar, screwdriver, etc. in the ring gear teeth will eat them up as it slips. Flywheel bolts are in tight and are loctited from the factory, so it take some effort to bust them loose.
Andrew

 

[Andrew]

Don't forget to mark the orientation of the flywheel as to the crank so it goes back on the same way.
Andrew

 

[Andrew]

I have a similar side-stand adaptor (made by Norman Racing) that goes from one motor mount triangle to a standard cheapie Chinese engine stand. Works better, as far as I'm concerned, than mounting to the bellhousing points, as it leaves the rear clear to install and turn the flywheel/clutch.
Andrew