Took me just 15 minutes - with most time spent putting the back end of my car up on jack stands. I don't have an air wrench or breaker bar, but I was able to get both nuts off using a thick 1/2" socket wrench, a 17mm socket and a bunch of elbow grease!
The parts ran me just under $15 from Advance, and the steering coupling discs definitely have a solid, firm feel to them:
Sorry for the fuzziness of this pic, but a thunderstorm was about to start and I still had to lower my car from the jackstands:
I'll take my car out for a spin tomorrow and report back. This mod should definitely tighten things up in our awd driveline and keep the rear diff from moving up and down so much with throttle input.
Brilliant mod Tom...simply brilliant!
-Chike