To be honest I didnt think they made the brackets to fit the i7 920 mobos. Anyway the Freezer & Pro has been around for a while - would recomend you go with a newer cooler.
The new AC Freezer works fine on any x58 mobo. I installed one not to long ago on an Asrock x58 Deluxe and temps are fine. Of course you can get a better cooler for a few dollars more.
The Core Contact and S1283 are known to perform extremely well for the price.