I dont think the HR-05 will fit. That chipset is too centered for the HR-05 SLI to go to the left or right. Also, since most video cards come out too far. I really dont think you'll be able to fint anything else in there. Its a low profile sink for a reason.
EDIT: I take that back, you might be able to fit the regular HR-05 sideways, if the mounting holes are correct. However, the lack of airflow might make things difficult. BUT, if you have no intention of doing SLI, get the HR-05 SLI and mount it facing whichever slot wont be used.