I have a set of factory crossbars and mounts for a P38. These mount onto the slots on the roof. They have square bars and locks. I'm pretty sure I have the keys but need to dig through my toolbox to locate them.
One mount is missing the rubber boot that wraps around the mount point. It's a cosmetic piece. They offer a sturdy mount for any type of rack or box.
I'm asking $15 plus shipping from 70124.