Tom:
Welcome aboard! You will be a good source of information on the interior front and I'm sure find all the information you ever wanted or needed about your truck of choice. I, like Arkansas Brian, am partial to the '64-'66 Chevy trucks. I have yet to find a good reproduction for the factory bench seat in the '64-'66 Chevy truck. Perhaps you could fill a void and create a niche by doing some. There are many 4-5-6 Chevy truck lovers on this site.
Take care and good luck with your upcoming projects.
Tony