There are 15 choices

• Fan Assembly
  • hybrid option (opt M99)
  • Without hybrid option
    • (dual fan)
      • enhanced cooling package (opt K5L)
        • (700 watt motors, 5 blade rimless fans)
      • Without enhanced cooling package
        • 500 watt motors
          • 5 and 7 blade rimmed fans
          • 5 blade rimless fans
        • 700 watt motors (7 and 9 blade rimmed fans)
• Motor Only
  • hybrid option (opt M99)
    • Driver Side
    • Passenger Side
  • Without hybrid option
    • (dual fan)
      • enhanced cooling package (opt K5L)
        • (700 watt, 5 blade rimless fans)
          • Driver Side
          • Passenger Side
      • Without enhanced cooling package
        • 500 watt
          • 5 blade rimless fans
            • Driver Side
            • Passenger Side
          • 5 blade rimmed fan
            • (Passenger Side and left hand)
          • 7 blade rimmed fan
            • (Passenger Side and left hand)
        • 700 watt
          • Driver Side (9 blade rimmed fan)
          • Passenger Side (7 blade rimmed fan)