Hard to tell by eyeball - mine looks similar. BUT my car sits low if you believe the "correct" numbers I posted. Mine looks, rides and handles fine and many people purposely lower their car so I'm leaving it alone. From what I see in the judging numbers there should be about a 2.5" difference between the front and rear heights with the front the higher of the two. Keep in mind that raising or lowering one end and doing nothing at the other will make the opposite end go in the opposite direction because of the geometry change. How much? Good question.
Another thing I have seen people post is that they were low in the rear and bought new rear springs and after putting them on they were still almost as low. The vendors sell both "original spec" springs as well as Heavy Duty springs. Many go with the HD which presumably are more likely to actually raise the rear.
I also found the below info posted "on the internet" but I have never found the original source. It shows widely different heights then are used for the current judging specs. My car is pretty close to those numbers. That's another reason I don't worry too much about matching the judging specs.
Found on internet forums...
According to the Specifications manual, the 57 ride height is as follows.
First check tires for proper inflation. Second, put two people in the car , combined weight about 300 lbs.
Front is measured from the ground to the middle of the headlight - 28.07 inches
Rear is measured from the ground to the middle of the taillights - 23.30 inches.
The 55 shows 28.67 inches from floor to center of headlight and 22.76 inches from floor to center of tail light. This amounts to a difference of 5.91 inches lower in the rear.