balcar
+1y
I've got both at my shop and its pretty much the same. (different by 1/2")
I have 3 of them dayum axles
1, my stock 98 one
2, SRW 14 bolt
3. cab/chassis 14 bolt
2,3 are withen 1/2" of each other and the main difference is the hub and brake back plate like watahyautknow says. If I were to build another rear i'd just grind off the welds for the backing plate, and put the dually hubs on the SRW axle and be done with it. Also might as well do the disk brake conversion at the same time, brackets are like 110 bucks, and u can get callipers and and roters for 250-400 and it will lighten up the rear a good amount.
Also make sure u got a 14 bolt, i hear some have dana rears but as of right now its still a rumor.
I will have my stock 98 dually axle available in the next few weeks.