Why not TKX 5spd?
Why wait for Passion? The TKX is amazing and it's readily available. I originally looked at Passion, but read one too many negative stories for me. Just over a week ago, I had a close ratio Tremec TKX installed with a McLeod hydraulic clutch. Alongside the QA1 suspension, its the best thing I've ever done to this car. It has completely changed the car. Doing 80mph in my 52yr old Duster with 3.91 gears, is just awesome. Best of both worlds. The TKX is compact, but does require a little surgery, but not too bad. After experiencing the install and the results, I'd make the same choice again. Best of luck whichever you choose.