Level10 updated their site with the rebuild kit for $998 for the
JR710E/RE7R01A tranny.
Trust me, as an AWD owner addressing the tranny is my only option. I want the same as you, but i feel we both might of addressed it incorrectly. Thank you for clarify what Level10 said and posting the information you obtained.
Looks like there full tranny service for ours is now $4,998.00, plus the freight shipping. So around ~$5300-5500. Or you could get their
VB upgrade ($998), rebuild kit ($998), and TQ converter upgrade ($798) for about $2900 after all the shipping back and forth; pay the 8-12 hours labor at a shop you trust and cross your fingers they know the 7speed and spring for upgraded flex plate as well ($900-1200) and end up spending the same amount.
Considering the amount of threads I've read about broken flex plates I feel its worth mentioning that, as part of the AT system, that it also is a know point of failure and should be addressed when upgrading.
If 650WTQ is the limit of a built AT then that's pretty decent considering that should be in the 800WHP range around 7000rpms, accounting for our engines typical TQ loss. That is a highly speculated number, however, but puts into prospective the justification of the money it would cost to upgrade the AT.