I'm looking to build a motorizied bike. I'm a retired computer tech that lives in San Diego. I rode motorcycles for about 25 years and then switched to bicycles. My legs are getting older and the hills seem longer so I'm looking for some mechanical help. My first shot was a electric bicycle that I picked up for my wife from a classified add. It leaves a lot to be desired. I've ridden it a couple of times and it feels like I'm peddling in mud with the motor off. I would like to try building a gas version. I have a decent mountain bike that I could convert or I could buy a new one. Deos anyone know any sources in the San Diego area?