STLNLST,
Other than a one-piece top deck, and slightly revised battery position, I can't think of much in the WE that's any different than what we've been running on the original 416 with the short arms, different blocks, etc. Do you know if any of those guys tried those things before giving up?
I suppose you have to take big race results with a grain of salt, since the guys driving are superhuman, but the list of big victories for the 416 since its release is almost legendary at this point.