Thanks for the reply. I took a gamble and ordered the Thermalright 120 extreme. It fit fine (without the air funnel) and dropped temps to around 30 idle (a significant drop). Very happy with the result. 3 SFLEX 120 F21 version installed too. One one HSF.
They are great... mine keeps my Q at 60-62C max core temp at 3.6 GHz. I've had it up to 3.8 GHz as well! Glad it fir for ya.