Tranny info and test?

[Bored&Stroked]

Once you change to the later gears, then you need the later transmission top (like a 39). When you do this, you cause a few problems (all of which can be overcome - if you know what to do):

1) The "straight up" shift tower of the 39 top requires that you alter the original 32 transmission cover - taking about 5/8" of metal from the front of the hole
2) You no longer have a provision to mount the hand brake - so you'll need to buy a bracket designed to bolt to the 39 top and mount the 32 hand brake.
3) If you're using the stock 32 brake light switch - it no longer has the correct mounting holes - so again you need a bracket to allow you to use it with a 39 top.
4) Stock mats and any special carpeting may need to be modified - as the shift tower is now bigger, straight up and further forward.
5) You'll need to use a later shift lever - you can no longer use the 32 lever. Most folks like the "swan neck" 39 shift lever - but it definitely is not shaped like a 32 lever.
6) Depending on the later gear set, you may need to grind/clearance the inside of the 32 case (such that the front cluster gear clears the case).

Okay - that is about all I can think of! LOL

Good luck!
B&S

[cas3]

somebody made a slant tower cover for late gear sets, JM 35 has one i believe from an older post. not available, but it can be done

[rotorwrench]

Folks have modified forks to work with the angled tower and late type synchro. I've not see one to know exactly how it was done but it would likely require fitting & welding of parts. The fork has to be the wider type and positioned correctly to move the synchro sleeve into the correct positions for proper function.