hello mark, looking at your pictures the amt kit is pretty close to the year of your dads truck. the steps that come with the kit were something freight liner was experimenting with from what I was told, so they were only avalible on a low number of trucks. a lot of guys who build this kit close the opening and put a single step on it. probably what your dads truck had. I only ever built this kit once and it was right out of the box. and from hanging around this forum for a while I learned a lot. like two things I never notice about this kit was the head lights are to high, and the front wheels stick out to far. other than that the only thing you'll need is the 1693 which I remember seeing in resin some where. old buckaroo is a member here that back dated his freightliner and did an excellent job on it. if you go back to page 4 in the under glass section you'll see his 1968 freightliner. I hope this helps.