Wow. I never would have guessed that. I just went to the garage, mocked it up, and walla they fit. Thanks PontiacJimThey are found on the 389/421 high performance engines under the valve covers and get bolted to the heads. There should be a couple head bolts with studs on them for attachment. They are "oil splash guards" or "oil drippers" the cover the rocker arms up and when the oil splashes out from the rocker arm spurt holes, the oil hits the underside of the splash guards and drips back into/onto the rocker arms to additionally lubricate the rocker arm balls.
Here comes another dumb question. Now that I’ve got the rust off do I need to protect them with paint or something? Or put them in the motor as is?
Sorry I know this is also in the wrong section but have no idea how to move it.