No clue about the Dana 24 but you could use them as anchores. I know that International used a T-15D in '75 and later trucks. The T-15D is a 3spd with a syncro low so unless you want a three spd or are rebuilding a IH then you could use them as boat anchores also.
Tim Springer
1980 CJ7
Tim Springer
1980 CJ7