I recently installed a 430W and will no longer need my SL-30. This was purchased from a forum member here 2-3 years ago. That gentleman had purchased it brand new several years prior and never installed it. He sent it to Garmin for a check out and new software shortly before selling it to me. I installed it in my plane that had it's first flight in 8/15 and has accumulated 250 hours.
The radio is in excellent condition with no flaws. It includes the rack and connectors, but no electrical harness. It uses standard D-sub pins, so it is very simple to make a harness. All pins have been properly removed. Just crimp on pins to your wire and push them in. There are professional pigtails with male BNC connectors for both antennas that were installed by Stein.