I think you only need the rear center shaft - the front center is unchanged I believe. It COULD sell in a couple weeks in its current form, but I am working on something special that I would like to implement. :)
that would be SWEET if i only needed one driveshaft! i'll do some checking on specs to see.
and something special?!?! i already thought the receiver/transponder mount and ability to mount the MMM with the traxxas mount was cool! so exciting! i'll wait for your final product.... you always have the coolest stuff!