@supertech,
I had a large heatsink/fan on my BlizzPPC's 040 whilst it was still in the desktop case. I had to stand the thing an inch off the table :-) But it worked fine...
Annoyingly, now it's in a tower, the 040 faces the side panel and there isn't room for the fan. It doesn't seem to run that hot though (recently got a very low profile fan but havent fitted it yet)...
