I've noticed that some RD500s have a matching headstock and others have the natural. The ones with the natural headstock has traditional j and mm shape pups while the ones with the matching headstocks have a more smoother soapbar shape(no tabs sticking out for the screws). Also the one with the natural headstock has four large magnets on the j pup instead of the traditional eight. Which one is newer? Do they all have coil tapping? Any other differances? Any info you can share would be much apriciated. 
