I would be doing a rebore, oversized piston, oversized rings, gasket set, top & bottom seal as well as new bearings and it will go like new providing you have spark.
I have the bearings, seals and gasket sets in stock. So if you want a price for the parts just send me a PM.
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.