The output shaft can be easily drilled out to use the Revo outdrive pins. However, since the input and intermediate shafts seem to be hardened, drilling them is a chore. Besides, those shafts are already kinda small in diameter and drilling them larger may weaken them. So, I've had good luck with using the pins found in the FOC kit (they seem to be harder) and cutting the smooth pin down a little and using two for each spot, one on each side of the gear hub.
This post (earlier in this thread) shows you what I mean.