I have a Slick 4373 impulse mag with gear just removed with approx 470 hours. Needs 500 hour and likely a new coil. You can overhaul it with the shop of your choice and know what you're getting. I would have it overhauled as a backup to keep on the parts shelf but am in process of converting to PMAG. I also have stock lycoming harness from when I converted to auto plugs and G3I ignition. The lycoming harness isn't new/nearly new but worked fine when removed.