I did a little research on the Passon 5-speed in 2017 and ended up passing on it. I ended up buying a TKO-600 from Liberty's Gear for my 65 D100 and did the entire set-up from pieces I pulled together. Everything went well and I really like the transmission. The most time consuming part of the set up for my application was getting the pedal and clutch arm ratios dialed-in to have the best engagement / disengagement at the pedal. I opted for an external hydraulic (pulling) slave cylinder on mine.