One thing you have to think about is that us first gen trucks have no anti-sway bars up front...so this means that are front leaf springs and very stiff (675lbs. to 800lbs.), shorter and if you go to higher ones they get stiffer...you can relocate your front hanger to put a longer second gen spring on and then add the anti-sway...I'm doing a shackle flip in the rear with ford 57" inch long springs that are very soft...in the front I'm still thinking about it...
