I'm not quite following this post. Let me understand - you have a 41 1/2 ton and you plan to put a 60-235 in it. You want to go with a T-5 five speed. Right?
First of all there are a couple of good articles in the "Tech Tips" part of this site that will give you some basics on the T-5 swap.
Your pedals mount on your bell housing, but the T-5 won't bolt up to your bell housing, so you have two choices: #1 - Swap out to a 49-54 bell housing. If you do that, the pedal assembly will not bolt up to the bell housing so you will either have to hang your pedals from the firewall or weld "bosses" to your bell housing for the pedal assemble to bolt to it. You could buy a bell housing from Buffalo Enterprises which has the "bosses" already welded to it. #2 - Buy a transmission adapter from Buffalo Enterprises. You will then be able to bolt your transmission to your bell housing, use your pedal assembly. You can also adapt your emergency brake to it.
If you choose #1, you will also have to shorten the input shaft of the T-5 transmission 1/2" and the splines will have to be increased 1/2" on the input shaft. If you choose #2, you will not have to shorten the input shaft due to the 1/2" thickness of the adapter plate. It will compensate for the 1/2" difference in the length of the input shaft and the length of the splines on the input shaft.
A good overview of most of this process is shown on:
http://home.twcny.rr.com/schickling/1940Chevy/index.html You'll notice on Mr. Schikling's site he also upgraded to a dual master cylinder, which is not a bad idea. If you don't upgrade, you will have to make a plate to be able to bolt the two side mounts of the master cylinder bracket to the transmission. It might be possible to forgo that step and just let the master cylinder bracket be secured by the three bolts that mount it to the bell housing. You will also notice that Mr. Schickling decided on the bell housing with the "bosses" welded on it.
If you decide to do this, you will also have to go to an "open" drive line with a properly geared rear axle, such as an S-10 six lug, to match your six lug front hubs (drums).
That's pretty much the basics of the swap.
If I have left anything out, I'm sure someone can chime in and pick it up for you.
I'm in the process of doing this to my 37 now and I can tell you that it's a fairly easy swap -just allot of work.
Good luck and if you have any questions, email me and I'll do my best to help.
