Prolimatech Megahalems Rev B will fit perfectly on an 1155. I use mine with my 2500k and Gigabyte GA-P67A-UD4-B3. I have 2 Noctua fans running in a push/pull config.
I am running a tonymac hack with a base multiplier of 32 (3.2GHz) with turbo set at 42 (4.2GHz). I have run several tests and cannot even feel the cooler get warm. Much better over my pervious q6600 running at 3.4.
Rest of the system specs are 8 GB of RAM waiting on my 4th 4GB stick (next week) for a total of 16 GB of RAM. I am still waiting on the SSD to use so right now I have a 1 TB WD 7200rpm drive. My geekbench scores are 10850. I know there is more to get out of this CPU however I have to wait on Gigabyte to fix the 32x multiplier issue.