Looks a bit rough. Picture shows a broken muffler bolt. You might want to clean it and correct any visible issues it has. Then run it on a bench and see if it even runs before you sink money into a plane for it.
Assuming it runs well, I suspect most any model rated for a .90-1.20 2 stroke would be OK for it.
The Jett web site doesn't show a 1.20 anymore so I suspect replacement parts could be an issue.