Front to Rear Wheel alignment

After all that above, are you saying the axel is off to one side by 1 ½ inches meaning it is ¾ inches off center, or axel is not 90 degrees to center line of car, and is cocked at an angle causing the car to crab when going down the road?

Measuring to body panels is not a practically precise way to determine drive line and other structural part’s positions, after a fender bender those body panels can be anywhere. The only way to check dimensions and positions of parts is from known frame points found in FSM, and plotted out on level floor using a plum bob to project them to the floor.

Most Mopar drive trains are off set from center line by an inch or to the right, but rear axle should center up to frame rails. In other words one axel shaft, driver’s side, will be a bit longer than the other. If you have a B Body or other longer axel that has been shortened to fit it may or may not have been done correctly, or spring perches may have been incorrectly located. You need to get under the car with ruler & plump bop, and make a few measurements.