Another thing to think about is the shifter location of the t56.
KeislerAuto in Knoxville makes a kit to move the shifter forward so you can use the stock tunnel hole and not have the shifter come up right in front of the seat.
'92 Fullsize, swb rc
5.3L/T56 conversion, comp XR275 HR cam .566/.568 lift 222/224 duration 112 lsa, crane dual springs, trick flow push rods, K&N Filter, Nelson Performance tune, Keisler shifter relocation kit, Boyd Coddington Smoothie II 18x8 235/55 up front, 18x10 295/45 out back, 2/4 drop, eaton lsd w/4.56 gears