Do I wait for the 5 speed?

I am to the point where I am going to put my 71 Dart together. I really want the Passon 5 speed but they seem as though they aren't going to be available for quite some time. I was thinking about putting an aluminum 4 speed together with the Passon 18 spline OD kit but would prefer the 5 speed. The OD kit is also not inexpensive so even though the 5 speed is quite a bit more I would rather bite the bullet and spend the money on the 5 speed put it in and be done with it. What I would like to know is has anyone run both the Passon OD unit and the 5 speed to let me know if the tradeoff is worth or not worth the difference. I do plan on driving the car alot and only want to do this once.
Why not TKX 5spd?
I am to the point where I am going to put my 71 Dart together. I really want the Passon 5 speed but they seem as though they aren't going to be available for quite some time. I was thinking about putting an aluminum 4 speed together with the Passon 18 spline OD kit but would prefer the 5 speed. The OD kit is also not inexpensive so even though the 5 speed is quite a bit more I would rather bite the bullet and spend the money on the 5 speed put it in and be done with it. What I would like to know is has anyone run both the Passon OD unit and the 5 speed to let me know if the tradeoff is worth or not worth the difference. I do plan on driving the car alot and only want to do this once.
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.