I just talked to the sales department at Wedge Engineering in Long Beach. (562 633 1663) They say they have about ten people that want mounts to put aftermarket seats in Crossfire's. Their problem is none of the request are from Southern California and they need a Crossfire for a day or two to make the first mount.
This sounds like a great opportunity for someone to get a deal. It would also be a big help for every one else who wants to put seats in a Crossfire, since there does not seem to be anyone in production making these mounts.