05+ were coil spring

The 99-04 were leaf spring and unless it was a dually, 99-01 were all dana 50 front axles(f250 or F350) But different perch width that the 80-97 trucks, custom spring hangers, you need a custom track bar and custom track bar mount. They still have the POS unit bearings(unless you spend $1200 on the DYNATRACK bearing setup) Overall, a bad idea.

But they still have the metric pattern. And putting adapter/spacers on the unit bearings is not a good idea. 05+ duallys went to a 8 on 200mm pattern

I typically sell Dana 60s for 850. Matter of fact i just sold one on monday. I try to keep 2 in stock at all times