Those wheel covers are not exclusive to the street appearance package. They were standard on 2004 & 2005. Street appearance package adds chrome grill and trim parts and some other parts. Both of my 2005s and my 2004 had those wheel covers and the stripped interior with rubber mats and basic seating. 2005 was the only year for the black whip AM/FM radio antenna on the passenger side rear quarter panel. Aside from VIN it is the only way to tell 2004 from 2005. I believe the 2005 had a lighter driveshaft, but I could be wrong. 2005 had different shift points for the transmission. It has been my pratical experience that the 2005s will smoke most if not all other years. Was not uncommon to allow a deputy with a 2005 to take lead vehicle.in a pursuit because it had a slight edge. Just my experience........

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Un-Reconstructed Southerner