Can't find fuse box online anywhere would this be junkyard item... Because except for that pin and fuse box all the rest of the wires coming out are in good conditionSwapping the whole dash harness isn’t going to be easy. Additionally, there is a big gob of wires that go through the firewall. On early trucks, it was a connector. On later trucks, just a big gob of sealant.
Easy answer is to get a replacement fuse box and swap all your pins over. This will be tedious and fun..practice on a junkyard unit first.