I am female and moderately disabled so I saw motorized bikes on ebay. I bought a Grubee 80cc motor kit. I also bought from Walmart, a 24" Cranbrook cruiser bicycle. This motor fits like a glove on this bike. Very nice! I will post pictures of this installation when I am done. I did have to purchase 24" x 1.75 cruiser tires because the 24" x 2.125 are too wide and the chain would rub on it. It looks like this bike will be a screamer! The Grubee kit seems more high quality than the other kits. Clutch has a better setup on the motor. I did not need to drill holes in the drop tube because I visited my local Home Depot and picked up a bracket to use that just works fine. I would be happy to answer any questions.