I was just checking over one of the other posts here in the garage. It was about an 85 K5 on Ebay that has autolocking hubs. That made me think "were auto locking hubs an option back then?" I've got an 87 Siverado Suburban. I thought the Silverado package was pretty much the top of the line, and it's got manual hubs. How cum? (not that I'd want the auto hubs- I'm just curious).