".......The tree shifter will not work on any other style trans, due to the push-pull selector setup found only on those old Mopars...."

Just had a 49 Chrysler in a friends shop, (3spd column shift with OD). From the looks of it it's just like any other 3 spd column shift. All that it would take to make it work with any ither 3 spd manual is the correct levers on the trans and adjusting the shift rods.