.....
If you have vented rears, its VX or nothing nowdays.
If they are solid, give AllGerman a shout 
I know as far as Vauxhall ...... but surely the rear calipers aren't unique? GM would surely have just picked calipers out of their parts bin 
I had a nightmare situation about 12 months ago when I did mine.
I sent the details (cheers Al 
) of to 2 companies in the hope that they could come up with a "off the shelf" solution to the pins / springs problem.
Sadly after a couple of months. both firms came back to me with the same answer ........... Nothing matching the dimensions on any catalogue or kit. The nearest one got was a pins from a old Alfa Romero so it looks like its VX only or drill the holes out and split pin them in place 
Seem to remember helping a neighbour a few years back with his old Merc front brakes.
Front vented disc & long old pins. similar setup
but can`t remember the model of car now.
Something like this
http://www.ebay.co.uk/itm/Mercedes-Front-Brake-Caliper-Pad-Retaining-Dowel-Pin-A0009914060-/291246317256?hash=item43cfa21ec8:g:bAUAAOSwGvhUG0TV
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Topic: Rear brake pad pin confusion (Read 5754 times)