BTT for a rare opportunity. Gobi does NOT sell these ("stock") as a separate kit. I just picked up a rack in the Midwest for a crazy good deal, BUT I paid attention to the brackets specially. All good with some grinding and re-spraying. I did however have to order the windshield covers and "transfer kit", and I got nailed over $200.00.
I dont know if you are selling these brackets or giving them away, but either way, BTT for you.