I found some good high res images posted here :
1983 Ford Probe IV Concept - GM Inside News Forum
The car now sits in front of Gullo Ford-Mercury in Conroe, Texas - not too far from Houston.
I found it interesting that the car seems to have been designed back wards.
Looking at the fourth image down, you can see how that the car is a reverse teardrop.
There is very little boat tailing, and I have to wonder how that the air reacts to those grates that hide the tail lights.
Also of note are the rounded edges at the rear, versus a sharp cutoff.
All of this is meaningless though, since it all
worked - the car has a .152 Cd.
( Although I have to wonder if this is the combined effect of things such as the under body, the wheel skirts, lack of a grill etc. It would seem that Ford could have done much better if they simply concentrated more on the rear of the car. )