Factory ride height?

I'm in the process of a disc brake swap along with a suspension rebuild/upgrade. I like the way my car sits now. I think it's a little lower than stock. I took ride height measurements before I started the project. I measured from the floor to the top center of the wheel openings front and rear. Can anyone tell me what the factory ride height is supposed to be for a '69 Dart GT with a 340? I think maybe the leaf springs were HD for a 340 so the rear may be a little higher? I don't want to order springs that put the back end up in the air and also, the PST 1.03 torsion bars that lower the car might put my car where it is now.