Hi, do anybody know the difference between PN 1034602-00-A and 1074812-00-B? I need to purchase a new set of tpms sensors, and the ones that the SC reference to is the 1074812-00-B which are the more expensive ones. But im not sure if there is any difference. My model S is from early 2014 but has fitted the newer system by TSC. Any idea would be appreciated.