Ok, here are the destruction pics. The motor side rear diff output last all of 2 packs, and the other side rear output made it thru about 20mins more. The other shaft is the maxx 2.5 one that I grenaded last night. I replaced it with another just like it and we will see.
I also removed the rear diff and filled it with traxxas 50k diff fluid. Seems a bit better, does not go "one wheel" during wheelies as much as it used to.
Now I did some tinkering with my selection of cvds. Since I have gone to 6x12 bearing I can run any cvd for an older maxx truck, but they will be too long. So i figured i would get a cheap "shiny" set of ebay, and cut them down. I have had good success with these cvds, I have them in the 6x6 maxx and they work fine. I have also cut/welded them before with good success. I would like to find an "off the shelf" option, so i will research that too.