Yes, as Toad said, come on over and have a look to see what you can find. If i don't have anything there are plenty of other scrappers around me. Maybe, we can find something off another car. There are only so many calipers after all. The rear calipers on a Sierra 4x4 are almost exactly the same as the ones on your car after all....
Phone me on - 07974 828405
I'll be about over the weekend. Saturday is best. I'm near Coalpit Heath.