Rear Leaf Springs

Lets remember one thing. Over the years of abody production, there were likely HUNDREDS of assembly line part numbers for springs and MP is trying to service them all with one. So they are expecting the same spring to hold up everything from a 3000lb 108wb slant six stripper to a 3800lb 111wb Shock Bumpers v8wA/C 76 Dart. it can't work. I just bought some Mancini springs and the arc doesn't look too severe on them. we'll find out soon enough. They're going in a 108wb 71 4 door.