I'm pretty sure I read that Car Craft article too-think it was about a GM Skunkworks souped up 55 Chevy 210 2 dr. Anyway I believe that they indicated the 4WD S-Truck rear axle is 3" wider flange to flange than its 2WD counterpart. Would be interesting to know for sure some dimensions... anybody post stock rear diff width and spring perch measurements for AD's? I might not have a truck yet, but nothin says I can't start scrounging parts for it!
