I took the big @ssed aluminum heatsink off of an old PIII I had laying around, and with a slight bit of grinding/milling on the mounting face, and 2 holes for pass-through bolts, it mounted up to the GPU just fine. (With some Arctic Silver Compound, as well)

Doing all this dropped my temps on the card 15 degrees, and allowed me to overclock it up to a 430mhz core, 490mhz memory, and bringing the FPS in ATItool from 210fps to 260fps… If I remember correctly, it ran at 42C idle, 58C full load on air cooling (running a new Radeon x800 GTO now)….. I could have gotten better with a liquid cooling system, sure… but this was a cheap alternative… hahhahhaha….
Here’s a shot of this ‘ghetto mod’ I did on it: (Radeon 9800pro video card)