Suspension

[Jessiah]

I have a 96 F250, with 150K, and the D-50 front diff.. Front tires are off camber /\. Ball joints are good. I know the D60 swap is the choise and I have my eye out for a donner. But I am a strikeing Boeing machinest and I have to keep a beer fund. So, I noticed that the front springs seem to have a twist to them at the I beam. I was thinking that I have time and have to conserve money, why not rotate springs, left for the right. My only thought is, would it have excessive ware on the springs and reduce their life. (like bending a coat hanger back and forth)
I have also been looking in to The Rough Country 2.5" lift. Any input on this product would be helpful. It is a add-a-leaf system and I am curious how well it works with old springs.