i might be getting a '78 351m for $150 to work on in my engine class at the college. it has an edelbrock 4-barrel manifold and a 4 barrel carb, exhaust manifolds, water pump, and alternator. he siad that is missing the smog lines and egr. just wondering if this engine is worth the time and money to rebuild and possibly one day put it in an old mustang or re-sell after i rebuild it.