Dakota front gears into a 7 1/4 rear?

That's about what i'd say supershafts, I'm working on tearing down the Dakota that is our answer right now, and it's been a nice troublesome job to yank the carrier from it thus far, I'm having a hard time telling if the carrier uses C-clips to retain the axles or not. I have another Dakota with a 7-1/4 rear (1987 4cyl truck) that is solid and as far as i can tell should go into an A body 7-1/4 as a bolt in, I'll dig out my Dakota books and find out what gears were available in the 7-1/4 rear, SO FAR I've only found 3.50s and 3.90s in early Dakotas and I wouldn't be surprised if those were the only gears available