There is / was no change in the center to center distance of the jack shaft to drive shaft since the Pro Ride / RMK chassis debuted with the Rush in 2010. Both the chaincase and belt drive are 191.26mm / 7.5299". So the only potential difference is the front cooler on the models that have the front tunnel cooler, but from photos of that front cooler on EBay it looks like the tunnel side is the same dimensionally and the water is offset into the engine area.
So the short answer is absolutely no difference on any of the sleds as to track clearance in stock form.