If I buy this...
 

If I buy http://www.summitracing.com/parts/TFY-85350/ the add a leaf kit, can I have it put on and keep my current leafs that already present there? I think I have 3 of them total. I am also buying a body kit that will give me a 3inch body lift and I figured I'd have the torsion bars cranked a bit, but I want to be able to tow more with my truck without squating it to much, and someone told me the more leaf springs you have the more you can tow, and this seems to be true because my bigger 2011 Super Duty has some thick, larger leaf's and there is more of them.

I am new to lifting anything, and will probably have the leafs put on along with my body lift, but I just want to make sure it can be done/worth it before I pay money for it.

Re: If I buy this...
 

They told you the more leafs you have the more weight you can haul?

Re: If I buy this...
 

no no - the more I can haul without squating my truck as bad. Example I hauled my buddy's car on a trailer a few days ago with the ranger and my truck squated a lot more then I'd liked it to. I seen a ranger though just like mine hauling a Chevy Silverado 1500 around and he was barely squating at all... Sorry was really tired when I wrote that.