And I don't want a high maintenance girlfriend but she has to look like a super model... We both have alot of work in front of us.
The easiest thing to do is get a kit, and make it either 80 or 100cc. you can spend from 50 - 200.00 bucks, and get from 45 - 55MPH.
If you put it together correctly they last as long as the OEM bike.