(Thanks Shoggy. But should you be working on a sunday? Take a day off!)
"NEU:
Die Backplate-Adapterbolzen ermöglichen eine Verwendung der A64-typischen Backplate zur besseren Lastverteilung am Mainboard. Alternativ kann der Kühler auch ohne Backplate montiert werden."
From the description of the Cuplex XT for 939/AM2/940 etc
Ah. Interesting. I'll see if I get that with the XT DI I've ordered. I don't know if I would be able to use it, I have removed the IHS from my chip, which may make that part useless. I'll see what happens.