I am attaching a couple of pdf's. One is from gm and one is from BAK industries.I recently reached out as well and they didn’t elude to any product lines for the Carbon Pro lined beds.
Could the original poster attach images of the install points? I’m trying to wrap my head around possible fixes
Both show how, just different aspects to wrap your head. Basically there are 10 areas to use a threaded j hook. Drilling is required on the plastic bed rail cap, to gain access to the installed threads for a bolt.