Here it is, looks like someone has already done it and with wonderful pictures from differant angles- this has got to be a fast bike. Bonus: It's legal and reliable.
FullSpeed.com - Martin McKeefery's photos - Honda Elite 80 Scooter Engine
Pretty easy turn-key operation, just mount to the frame, gear and sproket it- mount a back tire and you're done. If anyone buys this for a build they should keep us all informed of their progress.