Product DescriptionBillet Aluminum engine mounting plate for DoodleBug DB30 and MotoVox minibikes. This is also great for custom engine installations!Drilling 4 holes may be required!This is the plate to allow you to swap your 79cc/97cc engine to a larger engine, such as a Honda clone, Predator 212cc, Tecumseh, Briggs, Subaru, etc. Includes hardware for installation.Basic Installation Instructions- Remove the engine from the mini bike frame- Remove the spacer the old engine was sitting on- Use the plate as a template to drill (4) 5/16″ holes- Bolt the adapter plate to the frame- Put the engine on the adapter plate- Now you have front to back and side to side adjustability for your motorApproximate measurements:Length – 6″Width – 7-1/2″Thickness – 7/16″