Gotcha.
I abandoned the Honda air box idea and recently sold them. I figured if I was going to change, I'd go another route, with the CB turbo hats and ducting to a single filter box with an inlet in the passenger side rear wheel well (I want to keep the OEM rain tray).
I
MIGHT have some of the cheap tin bases laying around - let me know if that's what you're looking for and I'll keep an eye out for them. If they're here, they're yours, gratis
I got tired of the bracket tack-welds breaking on those