The stroker is going to Hesco next week for her semi-annual dyno checkup. I'm also going to drop off my newly acquired D44 and they will do the regearing from 3.54 to 4.09, that requires a new carrier. I have a new Trac-Loc carrier that came with the axle and a new open carrier, both for 3.92+ gear ratios.
My 2WD rig never sees any offroad, but does see occasion hard onroad. :D I've snapped two axles on the current 4.10 open carrier D35 (one on the local 1/8 mile drag strip) since the stroker went in. I've had both axles on previous XJs, and have had no problems with either in the past. I'm planning to occasionally revisit the local 1/8 mile strip, but the main purpose of my rig will be the D/D, and maintaining decent gas mileage.
I'm leaning to the open diff, less maintenance down the road, and can see no valid reason for the Trak-Loc. Experienced comments?