I have read many discussions on the pros and cons of each style of rear wing, and I'd like to comment…

First, the rear wing can be called a spoiler. These terms can be interchangeable, but beware that not all spoilers are rear wings.

A spoiler does more than just provide down force. A spoiler "spoils" the ability of an airfoil shape induced lift from lifting the back of the car. The Crossfire's cab and hatch longitudinal cross-section fairly closely resembles that of an airfoil more than most vehicles, and this is why our beloved Crossfire needs a spoiler.

I believe that the deployable wing on the standard model provides more down force (its angle is deeper than the srt's fixed), but the SRT's wing is wider and therefore spoils more airflow over the rear end than the standard.

It is the summation of the two forces (1. angle of wing providing down force; 2. width of wing preventing "up force" or lift) that ultimately determines the total amount of rear tire down force the car feels. I believe that the SRT's wing probably has a greater net effect at any given speed than the standard wing, simply because the increased width more than makes up for its shallower angle.

A good question from this last observation would be which car's wing actually creates more forward drag at a given velocity? My guess is that the SRT's actually creates less drag and creates more net down force. This seems counterintuitive at first, but think of it this way: If you can reduce the lift of the body without adding an angled wing to add down force, you have a more streamlined, and less drag-gy, airfoil/body.

This all, of course, assumes that you are just trying to negate the effect of lifting at speed. If one is trying to plant the rear tires down in a 120mph turn, then the greater the angle and width of the wing, the better off it is. So in this context, the deployable wing is probably superior, but I am discussing the straight-line effects of each wing.

Finally, did the Crossfire engineers actually think about these things when both wings were being designed? I'm sure it came into play. My guess is that they probably agreed that both designs created enough net down force to ensure stability at any speed. They probably agreed that deployable wing was much more interesting and deserved to be on the model that was first put into production to help capture as much interest as possible.

Judging from Crossfire sales numbers, the deployable rear wing hasn't sent people flocking to buy the Crossfire. IMO, the deployable should have been the SRT's wing, and the fixed the standard.

Just a fun little opinionated FYI...