[lincpimp]

Looking at Mikes motor mounts, they may have enough adjustment to allow for something like this. The diff would have to be flipped to the front to allow enough room for the slipper, but a custom outrunner shaft may have to be constructed. Using something like the new emaxx and erevo input shaft may work, just turn the raised center portion down, so that the shaft is 5mm all the way dowm. Something like an axi 2628 motor would work well, as demonstrated by Sike with his emaxx...