I recently purchased a 55 Series 1 and have the same issue as you regarding wheels/tires. My truck is stock except for chrome Vintique smoothies that make it look like a hot rod as opposed to the desired farm-truck look. My problem begins with determining with certainty what 16" wheels I am looking for...should they look like the 54 wheels you are searching for? Should they have spring-like clips for attaching hubcaps, or should they have nubs on them for the hubcaps to snap over? I will follow your post and hopefully when you find a good answer, you will have solved my issue as well .