I see you're in the Seattle area too. Am also in the process of changing out my exhaust to a V&H 2 into 1 but ordered the 17555 since the price was right and no 17535 to be found at a reasonable price. Would love to see your bracket as I will have to modify one to make my system fit. PM me if you want to get in touch, maybe I could lend a hand if you're nearby.
You should have everything you need with the 17535 kit. Have done the research.