Two Different brackets for the Fiesta ST Accessport:
One replaces the silver vent trim and gives you a flat surface to mount the Accessport. I recommend this one, Vent_Ring_Mount.stl.

The other mount (AP_Mount.stl) was my first attempt at a relocation bracket which used mounting tape to stick to the side of the vent, this solution was prone to falling off due to the adhesive tape not adhering to the ASA part after sitting in the sun all day.