I'm thinking of building an OCC chopper with a happy time. Does anyone know of the cheapest way to mount the engine. I see a bunch with a plate that mounts right on the frame. Where can I order these and how much am I looking at? Also how about mounting the sprocket to the back tire. DO I need an extra part or will it mount to the spokes? Trying to keep the build cheap have an old OCC just sitting and she could really use an engine. Thanks for the help.