The red paint looks great. A couple of ideas for your trim idea request. The side mount spare tire. This could be treated to something like a Continental Kit on a car. Early models like when this truck was new they would have a canvas type covering in a contrasting color. Later on a metal cover with a flat face toward the public and often with a design of some sort. How hard would it be to create a decal of your Christmas Cookie Tin lid and put that on the spare tire cover ? There was a time when owners would chrome the tail gate hinges, could easily be done with foil or a chrome pen. The wood treatment for the bed floor. Pen stripe decals are also a thought depending on the style you're after.