I have switchable tails for those CMI's that need to be rebuilt (they sell a kit to replace bushings and seals) . No pump or rams for the system though.
What kind of tails? Rope seal, Merc 500 efi or Flex-flare? I have a set of 500efi tails but will only sell them with the headers clamps etc. $1500, and I have a set of rope seal tails dry to the tip for $150.