done without special tools?

[HotRodScottsdale]

So I got lucky and found a 83 parts truck for my 84. Now I got it for the body *97% rust free* but found out it has the same rear end as my 84 and I REALLY needed a new one as my 84 came with a shot rear end. After checking gears I found that only the carrier got messed up and the pinion * guess a nut came undone and pinion slid towards and into the carrier* but the ring gear and spiders look fine. In the 83 I just got looks fine but the fluid was very black and gears look worn down. My question is can I take the carrier/pinion from 83 2wd and put it in my 84 4x4 with the 84 spiders and ring gear? Both are 14 bolt s/f 342 gears