I had the springs on my daily driver Dart re-arched and another leaf installed three years ago. Couldn't be happier. I can load it up front and rear with adults and it rides great. Local metal fab shop charged me $150. I found a flat parking lot and brought my floor jack with a block of wood to the rear bumper. Measured before and brought it up a little at a time and remeasured. I told him I wanted 1.75" and he nailed it.
