Universal Mounting Bracket on Topper

Does anybody know if GFC universal mounting bracket will attach to the side of the newer toppers? In the website description it does not specify and it appears as tho the mounting holes are intended for a camper versus a topper (3 vs 2 channel).
Yes, I asked GFC and am waiting for a reply from a few days ago. Tried calling too, but I guess they’re busy?

I’m trying to attach a OVS 270LT awning to the passenger side of my topper and would rather not use the 400 dollar load bars for various reasons.

Thanks in advance!