Just found a 41 diff with Columbia attached that I want to put in my '29 roadster. I'm going to run 32 B engine and also a 32 B tranny. I'm faced with shortening the torque tube now. I'm planning to use a reverse eye Model A spring and move the crossmember back 7.5" Can I mate the smaller diameter tube from an A diff and shaft to the 41? Any help would be greatly appreciated.
Speedway Motors now has a shaft kit to do this very thing but is almost 350 bucks. Would like to do it myself if I can. I have access to a big lathe if that helps.
