When it comes to sexy engine parts, water pumps are pretty far down the list, hanging out with the motor mounts and wiring harnesses. So what do you do if if you're an eBay merchant selling water pumps for 1937-1942 Ford flatheads? How do you draw attention to your product over all the other 1937-1942 Ford flathead water pumps flooding the marketplace? Perhaps put a pretty lady in a bikini in the background? Genius.