Ok, the next weak link that I see is:
Is there a set of Revo Diff to Wheel cvd's that are compatible with the regular Hot Bodies Diff cup?
I have the RCM 6mm conversion shafts installed. These allow me to use the Revo Driveshafts from Diff to wheel.
I'm twisting them like a Barber Pole. The hardened steel pin that secures the Revo Shaft to the Diff is elongating the hole. The flat part is twisting. This will eventually give way to metal fatigue.
On 6S, I'm going to need some tough cvd's on the rear. I think the Hot Bodies diff cups may be stronger since there is more steel there. That is, IF I can locate a Revo cvd that will work with them.