I'd concentrate on getting it running first. Then you can determine if or what you may need depending on how it runs. I have been able to get most everything I have needed for my 223 (follow-up of the 215) from my local NAPA, sometimes they have to order, usually get next day. LMC, Egge, Kanter, Green, are a few places where you may find parts,if needed. LMC will send you a catalog for your specific series of pickup, free of charge, all you have to do is ask for it. Search up Edwin's I-6 site for a lot of basic info. He may chime in here for you.
Is good to find more people trying to keep these nostalgic vehicles running in the original configuration. My 62 F100 Unibody is a Daily Driver. Lots of friendly help here, if needed.
Also might help if you update to give your location. Not required, but someone may be close to your location to talk to or help.
Fred