The LNB/switch assembly is different on the 1000.2 and 1000.4. (I hear there is a new western arc LNB/switch assembly to fit on a 1000.4 dish, but that won't help you going from WE to EA.) You probably just want a 1000.4 which comes with an integrated DPP43 switch. (I made up that part number; it does not actually exist as a separate box.)
