Measuring ride height

With some of the above comments to consider. If “all” the suspension pieces are in good working order it is very simple.

Measure from the floor to the adjusting arm at the flattest point on the inner side of the adjuster bolt. This is the A measurement. Measure from the floor to the bottom of the lower ball joint case. This is Measurement B. The measurements should be no more than 1/8th difference. It does not matter what size tire diameter or what size bar is installed! This is the procedure for all cars regardless of tire/wheel size or bar diameter. I find it easier to put some bricks or such on the floor and place my 6’ level across them and confirm level. It is easier to measure down to the top of the level when doing it this way. Course if you have access to an alignment rack all the better. MaPar designed our cars this way to be simple and only one adjustment procedure for all the bodies, engine sizes and bars. They pre-engineered it that way. This will center the upper/lower arms between the stops and set the correct angles in the suspension as well as load the “pre-engineered” bars to the correct value. All this said, it is the procedure for stock Mopar components and the aftermarket may not have engineered this into their products. Further more if you are jamming a 440 in an Slant six equipped A body then use the correct bars and so on.