I'm basically a suspension installer and never really messed with engines, so here it goes! I want to do a tune up on my 350.....4-bolt main engine. I have figured out changing the plugs, wires cap/rotor, oil, fuel filter, air filter.............what else should I do??? I'm going to do this myself, cause I can't stand to pay somebody to work on my 70 K5. Blazin' in TEXAS!