Are you changing transfer cases for a pass-side diff?
I got two matched pairs both off of jeeps:
D44F/D44R, 3.55s, 6 on 5.5 pattern, discs/drums, open front/locked rear, pass diff, warn lock-outs, 60" wide: $200
D44F/D60R, 4.10s, 8 on 6.5 pattern, discs/drums, open front/lim-slip rear, pass diff, warn lock-outs, 66" wide: $350