Lucas brake caliper

Hello.

I wanted to have new brake calipers installed in the back.

I have some of D&W Repair on offer, but they're Lucas'.

The term reads:

Brake caliper, Nordjysk Kobling
Lucas System, D 43 mm, right

The page reads:

http://www.duwrepair.de/was/wps/portal/duw/kcxml/04_Sj9SPykssy0xPLMnMz0vM0Y_QjzKLN4v3CQHJmMUbxweb6UeiiZjCRXw98nNTgeKR5vEm8U6BzvpARc76Qfre-gH6BbmhEeWGFo4AxJHsrg!!/delta/base64xml/L0lDVE83b0pKN3VhQ1NZWmlncFJBL29Ob2dBRUlRaENFTVloQ0dJUUlTRkNJQWdBR0VRQkFBY0Z3VXNJQWdIQSEhLzRCMWljb25RVndHeE9VVG9LNzlZUTdEbUc0UkEvN180X0JRQy8xNDMvamF2YXguc2VydmxldC5pbmNsdWRlLnBhdGhfaW5mby8lMHNob3AlMGlzcyUwanNwJTBhdXN3YWhsVGVpbGVHcnVwcGVuLmpzcA!!#7_4_BQC

My Audi dealer said the V8 had two different brake calipers installed.

I have girling.

That's why they wouldn't fit.

Was meint Ihr??

Thank you in advance.

Greetings Markus