These things are somewhat pesky to find. The best is to get them NOS from eBay, wait and watch and they show up every now and again. LMC sells the whole things, they are not so good. Their rubber blows chunks for these too, I spent 4 hours trying to git one piece on one last year with their rubber. And the glass channel they supplied, when you put the glass in the channel with it, the glass would fall out. Then I found some part numbers for the rubber and the dealers still sell them, so I refurbed a set last summer for a friend, using NOS rubber & channel, it wasn't so fun, they use special short stubby fat headed rivets I couldn't find anywhere, and fitting the rubber to them was a bear. For my truck, I saw a set NOS on ebay, and bought them. Much easier. Just had to weld the second mount hole to fit the 80's ones I bought to a '70's truck, but you won't have to worry about that in you '87.
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