What is your budget MacAttack? For $4-5k I'd look for a Crossfire or Renegade, for $5k+ I would recommend a Switchback 136, or a 144 with tipped rails. Avoid the '08-'10 Polaris 800 motor, but 600s and the other 800s are good for the most part.
1993 Polaris XLT Special
1972 Arctic Cat Panther