As best I can tell from googling on yahoo, ebay, etc, these are called a shock plate: The broken one is from my 61 Ranchero and the intact one is from my 62 donor Ranchero. (Both from passenger side.) The only ones I can find online are for late 60s Fords (catering to the Mustang crowd) and those ones look similar, IE: However they are flatter in design. Mine are shaped with a notable indentation which runs perpendicular under the leaf springs, and the single bolt that comes through the center of the bottom leaf sits within that gap. Does anyone know if my version are available anywhere as reproduction parts? And while I'm under there, I do know that I'll be replacing rear shocks eventually, which I've never done on a Ranchero. How do I access the nut holding the top end of a rear shock absorber? Does a panel from the bed have to come off? That seems drastic but I can't see any other way!