[GMPG]

Here is an image of the car profile with aero curve overlaid. (Thanks for that tool whoever made that!!) This is how the car looks now with the...addition of the deletion of the rear wing.

Is there anything I can do at the top of the rear window/roofline to help the flow? I haven't been reading lately but I think the rear window drops away too fast so attached flow might be good? No real time for tuft testing that one although maybe on the road I'll have time to experiment on the trip back.

As a note for other Sunfire owners: Removing that wing didn't do anything I could measure for mileage but it made the interior a LOT quieter at highway speeds. A rear parcel shelf and 3rd brake light from a Cavalier fits fine but you need to trim the edges (Cav sedan wider) and remove most of the brake light. Attach the trim and red plastic lens/bulb holder to the parcel shelf directly and it fits and looks fine.

The most obvious noise is now coming from the mirrors on the highway but a delete there falls outside the scope of this project. I'm going to run about 38psi, maybe 40 but I'll probably leave the whip antenna on for the trip. May shorten it and wrap a 6-8in stub with the right length of wire.