There should be an automatic disqualification for anything that was converted into a Street Fighter II. When SFII came out it was the hottest coin box hit since Pac-Man. If you could convert a bunch of old torn up games that no longer earned a dime into a game that would pay for itself within weeks and earn you thousands of dollars a month, you'd have converted them, too.
The purist in me hates to see converted classics, but understands why, especially in the case of SFII, which ops would have been dumb NOT to install in any cabinet they had available.