The 87 is getting there but...

[David Claflin]

How would I check?

Measure from the level ground to the peak of the front wheel well. Do the same at the rear and see how they are.

[Mr. White]

For the rears

It measures about 25.5 inches from the ground to top of fender lip on the driver's side.

Pass side is almost exactly 1 inch taller.

For the front

26" pass side
25 3/8 on the Driver's side.

Huh.

[David Claflin]

For the rears

It measures about 25.5 inches from the ground to top of fender lip on the driver's side.

Pass side is almost exactly 1 inch taller.

For the front

26" pass side
25 3/8 on the Driver's side.

Huh.

The driver's side front being low is what has made the passenger side rear high. You have sport spring or super sports??

For reference I measured mine with super sports.
DS
Front                 
25 3/4         ^           25 1/2"       

Rear
26                ^            26 1/2

Mine is probably bent, the car. I believe it has been in a ditch at least, although there is no evidence in the front or rear of repairs I did find quarter window glass behind the panel in the rear and the right rear quarter has been painted. It drive good and track straight, so that is all I was worried about.