NIB, never run, Orion .12 Wasp with custom water jacket,180 Deg header, header gaskets and springs, tuned pipe coupler, rotary carb. Water jacket will require drilling and tapping for the inlet and outlet. $100 plus USPS Priority shipping, Cont. U.S. only, PayPal as family or buyer adds 3%.
NovaRossi makes a flywheel kit, part number 20661 for their .12 engines, it has 5mm threads which is what this engine has on it, should work, I think they're around $19.00