I could use some rear brake help!

1. I looked for a service label in the luggage compartment per my Bentley's. Can't find. All I'm trying to do is determine the make of the rear brakes. When I recently ordered the front assembly, they sent me the wrong calipers. I'm just trying to gain knowledge to possibly avoid these problems when I order parts.

2. Looks like I should replace the rear discs. Doesn't look like a tough job, but in reviewing my manuals, there is a section concerning the use of shims to realign the caliper. When I did the fronts, I guess I didn't read the shim-business but they seem to be OK. Should I have some shims on hand? What kind or size?

3. Two of my manuals say to replace the caliper mounting bolts. I didn't on the fronts - just cleaned them up. Any comments. Should they be replaced on the rears. Is there something special about the caliper mounting bolts?

4. Do I need to be particular about the discs that I purchase. The fronts were ATE's for $36 ea.

5. Any other tricky things that I should be concerned about.

Thanks so much for any input or guidance provided.

Marty Wolfson

90 244 202K, 93 244 149K, 99 V-70 58K, 92 960 166K Resting