1966 Dodge Dart GT Factory Ride height?

mopowers, thanks for the info on the front suspension. I'll certainly use it when I get that far.

My questions are with the rear suspension ride height. My old method of measurement was to measure the height from the florr to the bottom of the rear wheel arch in line with the wheel hub. I just got the '64 Dart GT and it looks like it's down by the a$$ a little. Measurements at centerline fender well with 3/4-full fuel, empty trunk, and 185 75R/13 tires are (L) 19 1/8", (R) 19 5/16". 184K with 95% driver-only use (one owner).

What is the spec for rear ride height and how is it measured?
No rear suspension spec in the service manual. Someplace I did see some body measurement points, not sure what years, that might have been for dealer's reference. Maybe in the Hamtramck Historical library? (alaskan T/A's website).

The rear will move a bit up when the front is adjusted up. At least that's what I have found, although it epend on wt distribution and starting point.
That's a lot of miles on a spring. How close it is to original ride height will depend on the number of cycles whether any were at max or overload. The spring should look fairly flat with trunk empty and 3/4 tank of fuel. Reverse arch is definately not right, but should not have a noticibly positive arch either. Bushings should also be looked at.