Thanks for reply. I got some u bolts 6 3/4 long. They could have been a half inch shorter but will work fine.
Mopar XHD leaf springs are what were used on all e bodies from the factory from what I read. I put new ones on and will see what the ride height is.
Test fit a HDK front suspension under it. Need get brakes/wheels/tires see how it sits. Then take it apart and get suspension powder coated. Paint bottom and engine compartment and put back together.