I learned last week from Partzilla that my 2006 Polaris VIN number indicates that it is a 500 EF, but the motor cowling displays "500 H.O." The ATV is mostly garaged kept since I purchased new in 7/07. It has less than 200 hrs on it and all the plastic or ABS suspension bushings have disentigrated or are about to. I have ordered new ones. None of the snap on engine shrouds stayed on their clip holders so I had to reinforced via duct tape. I am fat so I thought that it was just my weight causing issues. Now, I am wondering if the dealer put this ATV together with spare cowling parts that were not a perfect match. Perhaps this ATV’s cowling was damaged before ever being sold, perhaps by accident, and the owner put a "500 HO" on it believing that I would never question it. This unit is 8 years old and motor runs well and shifts well but the other parts: bushing, cowling are falling apart.