Is it even worth trying to sell a 741 case??

And if you can find a n old Dodge truck axle housing ,you can slip that under your "90 and down Ram tow vehicle and have a better axle ratio option. Just remember that they changed bolt patterns in '85 and up though. I did that on my '90. Simple way to get rid of an 8 1/4 or 9 1/4 and front rotors from 84's interchange with 85 and up so ya get the same nice 4 1/2" bolt pattern. I used 741 cases in racing and had pretty good luck with them and they seemed to be cheaper and easier to find better ratios.