For reasons that I don't fully understand, I have been tasked with finding a 4-stroke, bike engine kit.
"Grubee" appears to be the pick of the litter. The problem is that there are none to be found. I think it has everything to do with the west coast port strike. They are available in Canada for $199Cn (about $159US) but can hardly be had for love nor money on this side of the border. OK, I did find one for $349US but the seller is a scalper and I think these units will be back on the market once the backlog on the west coast is worked through.
I think I willteach m y little Peter Fonda the value of patience.