Some items from this specific schematic: Washer,lk Med 3/8", Pin, Spring, Lever, Shift 1, Bolt, Stud.
The most reasonably priced component used on the V8 5.7 Yems 1990 Engine Ignition Interruption Unit is the Screw, With Washer (6t0).
This Plate, Shift 1 is the most expensive of the items that make up this Ignition Interruption Unit assembly.