034 to 036 is the best way to go for the 1125 series. Put up a wanted ad for an 036 top end or just cylinder. If you can get a cylinder, grab a Meteor piston from DDave for $34 or whatever the ebay price is down to now.
Replace seals, trim cylinder cover to fit, possibly need a muffler spacer, fuel line, impulse line, plug, fuel filter.