I would like to mention that the Scythe SCNJ-1100P Ninja Rev. B fits on the
MSI K9A2GM-FIH mainboard.
I was a bit worried about the condensers and the memory slots (with memory inserted) but it fits. The heatpipe stays away from the condensers just one or two millimeters. Two pictures:
I've mounted the rig inside an Antec NSK4480B, that also fits (someone posted that combo somewhere on the WWW).