i have 4" pro-comp springs and 4" blocks right now and i want more flex. now obviously i could get softer front springs. but would a springer setup be safe on a suburban? i talked to marv springer a while back and suggested not doing it to a daily driven suburban because the springs are so soft. and there's so much space in a sub that you'd have to be really careful about loading up the truck. and your towing capcity would be GONE! but do you HAVE to use those springs? i know they're longer. but can you add some stiff add-a-leaves to them to keep them under control? i don't see why not.