i would try one of these...
http://cgi.ebay.co.uk/B36-of-540-Siz...item439ce95ed5
nice big fan, lots of meat...... however it may block your ventilation holes off.
the speed passion heatsink may be worth looking at
http://cgi.ebay.co.uk/Speed-Passion-...item27ae497b6e
you will just need a fan... maybe a turbo yeah racing version?
http://cgi.ebay.co.uk/Yeah-Racing-YA...item518fa2642b
nice and blue to go with your other bling.... and 14k rpm!!!!