Boatpuller,
I am very happy with the conversion to rear disc brakes. I fully agree with dan_gilson that the front to back balance is much better. I just feel (only my opinion) that with a load on, such as a 6 to 10K gooseneck, the brakes don't pull as hard as the rear drums did with 3" shoes. Now let me also say that this was within the first 4K miles of having put these on the truck, so it may just be the fact that the rear brake pads were not fully seated. I am just posting what I have noticed. With all of that said, I would do the conversion again without any second thoughts. Bottom line is that if you are on the fence about converting, go for it!
BTW, I have not hooked the e-brake up yet. I will get it done when I can get into the heated shop.
Other comments would be that the rear rotors are 3/4 ton rotors. Consider using a residual brake pressure valve when going from drums to discs. Finally, plan for a day and a half to do it all. Murphy's Law will be present.
Hope this helps and doesn't confuse anyone.
Jeremy