Sorry Russ- again, I'd jump on it, but the poor thing would collect dust at my house. I really have more motors than I know what to do with, and (like you) it's a bit hard to part with them. The closest thing I could put a DuraForce on would be the Treefrog, but I already have the B/S-Mitsu engine to try the Vertical 2-Stroke Thing with. (It's not as good hp-wise, but it was free.) If, after we move to Colorado, and I ever get a shop or garage to set up, I'll try the LB thing. Even the 4.5hp versions would make me happy. Your first LB kart (to me) was the coolest.