Magnum Heads Magnum Head Bolts Magnum Compatible Intake Manifold Magnum Intake manifold bolts Aftermarket/AMC type oil through pushrod lifters 7.650" length pushrods Magnum rocker arms (these are different from the originals) 318 Cylinder Head Gasket Magnum Intake Gasket (I recommend the edelbrock one) Valve Cover gaskets (use "LA" gaskets for 5-bolt covers and Magnums for 10 bolt covers) Exhaust Manifold or Header Gaskets
Auto cars will also need the kickdown linkage modified or replaced with a cable.
be sure to test fit the heads and pushrods and make sure that the pushrods have adequate clearance as they pass through the heads