Garden tractor type tires. Stock means a stock motor on a stock frame. No intake modification. Milled heads are allowed however, see the diagram for specifications. 1 factory type head gasket installed, in the proper location.
Camshaft can be any cam grind.
Factory stock valve size intake and exhaust valves need to be O.E.M. stock. No block porting. Volkswagen clutches will be allowed. Steel flywheels are allowed. Stock Flywheels are not mandatory.