Yes nice score, your much better off buying old vs the new crap of today.
Just make sure it's tight.
I use to have a Rotund engine stand like this but built in the 60/70's much better build with the cranking mechanism in a cast iron housing.
View attachment 154428
(current production unit)
Also a tip, use sealed goggles when hogging out ports with a die grinder, as I had a sliver of metal ricochet off my eye brow right into my eye using safety glasses with side shields hogging out a 2-Stroke cylinder many years ago. Went to my GP an 1 Q-Tip later RELIEF!
You may already know, but just a reminder it's been 30 years