You don't want an 01. I believe they went to a low pinion for the last year. Look for one with 8.25 rear, not Dana 35. 27 vs 29 spline doesn't make a whole lot 9f difference but 29 is stronger and started in 97. 95 and up have the bigger ujoints in the front.
I would shoot for a 95-00 with as few miles as you can afford.