My 2003 3500 was a SRW, so no you don't have the first.
Yep Your right I don't have the 1st SRW ( one of the 1st ) 2013 3500 was New Frame and Suspension , 69 Aisin , They also changed Injectors and internals, It was the 1st year for SCR in Ram Cummins Pickups, it was in earlier Models of CC 2011
So one of the 1st that Year. Still no codes or problem even after it been sitting for two weeks in My drive Way , I started it today and took it to the shop.