What's wrong with wanting to make your truck correct? Nobody said it was for his ego or for resale. It's a hobby and everybody participates in their own way. I personally like really original trucks. Anybody can fix a truck but it takes research, time and dedication to do it right. As for the headlights, I believe your going to want to find the metal backed lights. Most of all your vintage of truck won't have the three little alignment nubs (or t!ts) found on most bulbs. The metal backed bulbs are really expensive to acquire NOS.
Bruce