Hey Everyone

I am in the process of getting ready to put the trim on the side of my 1965 C10 long box fleetside. My truck was not orginally a custom cab which brings about my issue. I was wondering if anyone had the specs on where the trim is supposed to be. I am ready to drill the holes to put the clips on for the trim but want to make sure I do it in the right place. I don't have the shop manual for the truck but was wondering if anyone knew for sure if this info was in there or not?

Thanks
Dan