Marlin is thinking about doing one, but nothing yet. I was talking to Alvaro about it in Moab.. I'm sure it will cost > $800 though. Slee also sells one I believe, from Mark's Adapters? but it requires a 2" body lift.. it's on the Shortbus though and works well asaik.
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 09 TTR125, 07 TTR90, 07 CRF50