This picture is at the beginning  of a skidder trail that we explored, just outside the town of Mackenzie BC. (note the Skidder in the background).  The only breakage was on the front driveshaft of the Toyota,  the slipyoke shaft spun inside the driveshaft
Participants on this trail were:
-My Bronco II, 2" susp. lift 29" Wranglers, stock running gear.(I even kept up too!)
-A  Toyota P/U with a Chevy 350, TH350, NP208 stock diffs, 36" Super Swampers and new fiberglass box
-A Chevy Blazer with a truck cab and shortened box, 44" Boggers, Dana 60 front and rear, 350cu, NP205, TH350