Yeah, I didn't find it either, until I saw somebody mention that autozone.com has repair guides. So I registered there and found the diagram for the '89 Caprice. Good blowup of all the parts for the type where the parking brake lever mounts to the primary shoe and another diagram for the type that mounts to the secondary shoe. Lots of photos too. Stay on the left side of page under repair guides, then drill down to "brake shoes." It's not the most intuitive site. Up to you if you want to register. No cost. Pretty neat service I didn't know existed until now. I always get the shop manual for my cars, but this can come in handy. There's plenty of shop manuals for your Caprice on eBay. I'm cross-posting to rec.autos.tech so they know about it.