Which rear end to use?

As far as I know the only carrier split with the 8 1/4 are the ones that use the 2.45 ratio. If yours has that ratio I think you are stuck with that gear unless someone makes a spacer for it. If it has a 2.76 or higher you should be good. The 8 1/4 is a good one, they used it in C bodys and full sized trucks... they will take abuse for sure.
but, I think RRR was suggesting if it is the 2.45 carrier, just get a different carrier from '95 on down Dakota, or some other 8 1/4 rear with a 3.21 or 3.55 and put that in the rear end housing, correct?