Really? That's cool, I hadn't thought of that. I left my sensor ring off when I swapped gears in my 8.8, Maybe it's worth reattaching. Kind of a PITA, but seems like it would be better than going with a GPS speedo.
I've got my tooth pattern looking good, backlash and pinion depth are good. I've got the perches, u-bolts, new springs, and new shackles. Still need to relocate the front spring hangers, weld the perches on, buy a new diff cover, and clean and paint. One step at a time! This isn't a terribly hard swap, but can be tedious.