I had a '01 2500 Dodge/Cummins with the anti spin option.
The rear axle was the Dana 70 with a Trac-lok anti spin. It worked very well.....however the OEM tires were a all season and would get stuck on green grass/worthless on snow pack roads or any mud.
When the OEM tires finally wore out I went with a all terrain tire with the larger lugs and voids which made a world of difference on green grass or snowy/icy conditions and mud.
Oh yeah and 400-500 lbs of tow sacks (6) filled with rock hard Redimix sitting over the rear axles also helped.
