looking for input on motor swaps. i am currently looking at a 2009 polaris sportsman 500 h.o. that the guy says needs a whole motor, ( which i know the guy and hes not the most mechanically inclined.) but looking at my more expensive options along with my less expensive, my wife found a 2013 570 motor for 500$. im thinking it should work but but before i spend money on the quad and the motor id like some input.