RE: window rubber
I'm new to this but I ran into the same problem with my 73 K5 after I painted the top. I needed one seal replaced and my glass guy called every supplier he could find, I picked up the phone and tried LMC too....no luck. I went to a local junkyard and found 3 K5's 1976 or later. I pulled my truck beside them and measured the seal against my own and they were identical. It cost me 10 bucks. I had my glass guy remove it and install it on my truck. the seal was just as hard to install as the stock seal on the other side. I have no idea why the numbers dont cross match but my glass is not coming out. Hope that helps. CWP