re: ARB sets - I only did that for one run. You can buy a full set, use the front and rear brackets and hang on to the middle bracket and hardware in case you want to move to a Fiamma awning in the future.
I use these with an 8' ARB awning. Drill the 2 mounting bolt holes into each bracket face and you're good to go. I use all 3 brackets. I figured I might as well.. no harm done and it adds even more security. My ARB awning will not be flying off anytime soon!
Just wanted to report the new awning brackets arrived here in Maine on Wednesday eve. I've been sitting on the Fiamma awning 1der sent a month ago, and I am excited to give installation of the brackets and awning this weekend. They look rugged, great hardware, and the instructions and video make it look possible for this amateur.
In for information on fitment with tufport hightop as well. I'm getting the hightop in about a month and currently have the Fiamma 45s on my rig. Would hate to get rid of it if I can't mount it on the gutter with these brackets.