you have to look at the video card itself. if it stock type video card hopefully the vendor put mounting screw wholes on the card.
if they did you would buy a whole heat sink with fan. plug the van into the video card if it had a fan header if not need a fan to molex adapter. as cards run in the 40-70c range any plastic may heat up and melt.causing your fan to fall off. the old days they uses to use two sided sticky tape..but the tape over time drys out..fan falls off.