Am at a point where I see a need in the near future to do some work or make changes concerning my clutch, trans in 39 ford pickup. Cost to repair stock is quite high as you know. Say I get a new clutch, pressure plate if needed throw out bearing rebuild trans or buy one I would be well over $1000.00 .Have thought about the t- 5 and what all it needs for the conversion and that would be even higher in cost. One other idea is a T- 170 which is not exactly cheap but from what I have found I can do this for close the cost would be of if I stayed with the orig set up. I have found 4 or 5 T 1-70 trans within 100 miles of my home priced anywhere from 350.00 too 500.00. Then I would need the adapter, open drive conversion and all involved . I believe the 500.00 one has only 73,000 miles . Have read about every post I could find on the net concerning all trans above and each has certain advantages but for the money the T- 170 seems the best choice . The gear ratio is close enough if I use a certain one from mid 80,s ford truck and I would get the benefit of overdrive. Any thoughts appreciated .