Pretty sure you are talking about Bestop's old Fastback top. Pretty sure California Tops used to make one as well, but neither are being produced anymore.
I looked into finding one of those a couple years back for my CJ5, but came to the same conclusion, they are not made any more.
Oouch $600 bones is alot for essentially, half a top
Don't get PavementPounder going on market value. :tonka: They're not made anymore...they're hard to find, and obviously worth some $$$.Like Cooter said, they've been out of production for a while.