Cooling advice for SLI setup

I have a biostar 8600GTS video card with a ugly, very large POS cooler on it... there's one issue if i put another one in the case the cooling fan will rest against the second card (fan will be between the 2 blowing heat on 1 of the cards) i have a PCI fan but i'd have to remove the old fan which is screwed into a piece of metal and screwed into the card... can i run the vid card with JUST that piece of metal kinda like a ghetto heatsink with that PCI fan? or do i need a small almost northbridge type heatsink and if so where can i find web sites to buy one.