I just picked up some heavy zinc coated steel L brackets from Lowes. They were 8 or 10 inches, I can't remember, predrilled. I think I may have been able to use the existing holes for both the awning and rack sides; maybe drilled one hole at most. Then took an angle grinder and cut off any extra length I didn't need. Spray painted and bolted up. Pretty cheap and easy alternative and they are rock solid.