I was posting about the M113A3 on M-L earlier this week. The cargo ramp will be a dead give away to see if they really did any retooling or just tossed in a sprue with "A3" specific parts like the exhaust, fuel cells, trim vane, grenade launchers, IFF panels and the like. I wonder if they did an interior for it. They seem to have that baby buttoned up tight.