Re: Et Another “Best CPU Heatsink” :)
Yes, I think it would fit. The ULTRA 120 Extreme is 163mm high and your case is a full tower, so it will fit. If the worst comes to the worse, you may have to take the side fan off, but it's unlikely that will be necessary.
AMD Phenom II X4 955 BE @ 4.0GHz + TU120E lapped - MSI 770-CD45 AM3 - 2x2GB OCZ DDR3 1333MHz - Sapphire HD 4870 - Samsung Spinpoint 500GB 7200RPM 16MB cache HDD - Tagan TG600-BZ Piperock - (Currently open test bed) - Windows Vista Home Premium 64bit.