CRRM has reefer C&S 1113/RGS 2101. Georgetown loop has reefer C&S 1116/RGS 2102 as a rider car. Off the top of my head I know the RGS had another "reefer" but I believe like 2102 it went into work service rather early.
CRRM also has boxcar frame and trucks 8308 with boxcar body 8310 sitting on top. I don't know what to do with those cars.
CRRM has C&S 7064, the only known stock car from the C&S/RGS still around. But this is an all wood car.
Jeff Taylor
CRRM curator of equipment and rolling stock.