Ipaint,
Here's a pic of what I have in mind for my Stretch Cruiser Builds, going for the Fat Boy / Road King / Heritage Softtail, and or Full Dresser Look!
That is of course using the Honda 50cc 4-stroke Pit/Dirt Bike engine with the following:
kick start, electric start, lighting package horn etc etc...
Guy's a if you are Looking for a motor similar to ipaint's there's a few online company's you can try
Jhammer in Cananda there's Gio Bikes,
Dirt Bikes, ATVs, Electric Scooters, Dune Buggies, Parts for Sale | Cheap Mini ATVs, 4x4 ATV Vehicles, ATV and Dirt Bike Parts Canada | GIO.
Here in the states there's Tboltusa in Pennsylvania
TBolt USA: Pit Bikes, Engines, Parts, Pitster Pro, SSR, Honda CRF50,
and High RPM Racer in Carbondale, Illinois their website is:
HighRpmRacer's Official Website - 110cc Dirt Bike - Loncin Engine Parts - Chinese ATV Parts and Scooter Parts at competitive prices. just check these sites for 50cc 4-stroke ATV or Pit/Dirtbike motors.
Here's a few things to consider when purchasing your motor!
Most of these companies sell the wiring harness separately as well as the controls ie your handlebar switches ( make sure you tell them your handlebar diameter when ordering your switches ),for electric start, turn signals, and headlight high low beam, the carburetor and the exhaust is most likely sold separately as well.
As far as the skid plate Ipaint might possibly be able to post a Link for those interested in finding one.
I would really like to see some of our Forum sponsor's selling these as motor kit's for Stretch Cruiser Builds, that would be awesome!
Ok here's the pic's of what I have in mind, using a Harley inspired build Fat Bob gas Tank, and saddle bags, oh yeah and detachable wind screen, shoot I even thought about fabricating a fiberglass Full Dresser style front end, then add a AM/FM Cd player sounds crazy I know.