Negative. I have a "Save the Squares" sticker on the back. And I wouldn't actually put mud flaps on anything. But if I was forced to, those would be it.
Martin brought to my attention a set of 3.42 geared 10 bolt axles on Facebook marketplace. They are from a 1990 K5 and may or may not have been rebuilt 50-60k miles ago. They have 30 splined shafts instead of my weaker 28 spline shafts currently, plus a better ratio for when I upgrade to 33s. Luckily I didn't scratch or stain my mom's Buick Enclave hauling them home.
This is a great thread! Thanks for all the pics and details. I just picked up a 89 Jimmy and am excited to get it baselined and start enjoying it.
I've drained the surprisingly-not-very-stinky differential fluid, which corroborates the seller's story that these were "rebuilt" 50-60k miles ago. I've purchased New fluid Degreaser Brake cleaner Brake fluid Rtv silicone Spray paint Still waiting on Warmer weather Or insulation for my garage Or a bigger heater for my garage