Stock 1989 318 w/ 48k Miles - Rebuild Recommendations

Good advice on the freeze plugs, go ahead and change them out. I like steel with a thin layer of Ultra Grey on the back side. I've never had a steel freeze plug lose it's grip and start leaking or blow out. Can't say the same for brass. Speaking of Ultra Grey, I use the caulk tube of the ultra grey and skim coat all the gaskets with it. Zero Leaks. If something else starts leaking, it's always there for the next gasket replacement. Cap the tube off with the a cap off of a bottle of gear oil. On the Magnum manifolds, the later hydraulic clutch makes the magnum manifold a happy installation, the left side exits right into the Z bar on the older clutch linkage.