rotax 503 engine with Rotax B gearbox

For sale Rotax 503 engine with Rotax B gearbox. The engine has been completely overhauled. The crankshaft has been used for 20 hours. New cylinder cut + 0,25 mm. Ducati ignition. Manual start. Two Mikuni VM 34 carburetors are included. Engine includes Rotax 1:2,58 gearbox. Sold as a whole as in the photo. Top condition.