I've searched around and haven't come up with a good answer. I've got a part time kit in my 203(po installed it, not sure who made it) and warn premium manual hubs. I understand what the new shift sequence is, and I understand how the 203 worked before the part time kit. L/H Loc for off road, L/H for highway. Difference's being that front and rear d shafts are locked at the same speed when operating in loc. BUT, I can't find any info on whether or not the drive shafts are still "loc'd" or if the t-case is operates as an "open or limited slip" mechanism in 4WD with a part time kit installed. Reason I'm asking is I've got 32's on the rear right now and 31's on the front. It's icy down here and would probably be bad medicine to run it in 4x4 with different size tires if the t-case does still lock.