Another question..

When I do get the truck here. I will change the oil, and filter.. I guess I should do points, and plugs as well. I'll check the cap. I would also like to change the plug wires.. Any thing else I should do?? Also.. There is no owners manual for the engine, so I don't know what for what.. Like what oil like 5-30?? What gap for the plugs?? What do I do about gas?? Seeing that the engine is a 67.. Can I run unleaded gas in it??, or should I put in that lead additive first?? Thanks.. ALP