I will say, I've had them install a detroit into a Ford 8.8, installed a ez locker and gears in a ford front D35, Built a driveshaft for my linked toyota, the race truck, this linked F150. I ran their SYE and rear driveshaft on my jeep, we've borrowed jeeps from them for work, ordered axle shafts for the 9" on my linked yota from them and off the top of my head, I think that's it. All from Adams... Not a single issue ever with any of that.
experience with Dans was setting up and gearing a couple 9" 3rd members. Great price, 100% problem free.
That's all 100% first hand experience with them and money spent at the places.