The way you've posed the question the answer is easy, yes there is. It's that 'some modifying' part that makes the answer easy.
I don't know much about trucks that early, and really have no idea what a T-14-B is. Is this a 1/2-ton truck or something bigger?
The next bit of information that would help is some idea why you want to put newer axles under this truck and what you want to achive.
A general answer would be that stuff from a Chevy or GMC from the next couple of decades might be the easiest to adapt. I have both 1/2-ton and 1-ton stuff available I could measure if that would help. My stuff is pretty much all Advance Design era, but its the stuff I'd bet easiest to adapt to your frame.
