Hi David
They are the same as the 3 sets I have here .... So far, not a lot of help
Looking at the Sierra manual, it states that the Girling type caliper was used on the early 1.3 & 1.6 Sierra.
The Girling one looks to be a good deal diferent to the ones I have
Mine is of the type refered to in the manual as the Teves caliper ( I asume this is now the ATE one )
Best I can do for you mate