Been lurking for a few days and just ordered my engine kit. I bought a 2010 Grubee 66cc Sky Hawk from Bikeberry. Still haven't sourced a bike yet, but I'm leaning towards an OP cruiser. Guy around here uses them in his production bikes and likes them. Plus they'd look pretty cool with the macargi springers.
Anyways, just introducing myself. I'm actually in Charleston, aka "Chuck-town". I should have it built in a couple of weeks. If your interested in riding....message me. We have quite a few MB'rs around here.