Looks like a quick & easy way to move the springs inboard for tire clearance to me.

2005 Dakota 4X4 3.7 2004 Rumble Bee 5.7 1978 Diplomat 318 1969 Satellite 318 "bracket racer" 1966 Barracuda (in progress ) 1964 Dodge 330 (future race project) 1962 Belvedere (HUM????)