Warn makes a kit to upgrade the D30 to one piece stronger alloy stubs with 297's and free wheeling hubs, spindles and serviceable bearings, a lot on the web on this.
I also remember an article some time ago where this conversion was pioneered using Ford D35 (?) outers (knuckle out?), custom shafts (but salvaged TJ ones may work).
Indeed I think the hub p/n is still the same between a Ford D35 and the Warn D30 conversion, so careful research and a lot of time junkyard shopping may net you the same results for less $.

Buy an Exploder for the knuckle/outer parts! hahaha