What more can one ask of Brain than being the brains behind the brawn of King Ding. Perhaps Brain with a Power Pack? In the sales promotion video on this site you can see a motorized Brain Ding-A-Ling with a Power Pack tooling along a Skyway. The line ended before this came to fruition however you can easily convert a Brain to accept a Power Pack. Go to the Repairs page of the website and download a step-by-step instruction guide.