Yes, it will fit. You might have to mount the fan and radiator on the sidepanel unless the case has a mount for 120mm man in front, then I'd mount it there. I cant see that from the pictures I have of the case if there is a 120mm fan mount there. But when you mount the H55 be sure that the case has positive pressure inside. (More airflow going in than out.) BUT with at least 1 fan blowing the hot air out.
EDIT: I see that there is a 120mm fan slot in the back. Yes it will fit there I believe. And if you do fit it there, have another fan blowing from the sidepanel onto the CPU/Northbridge area to keep them cool.