Has anyone replaced the leaf springs on their trucks. I have one that I bent and when I change them I am putting both on because I imagine the otherone isnt in to good of shape. Is their an aftermarket company around that makes good heavy leaf springs?

 

most aftermarket suspension systems use either add a leafs but some do complete new ones. they also sell new replacements for the stock ones. just going to have to browse them or give them a call.

you might also give les schwab a call or even a junk yard. they probably will know how to get one for ya.

also return the throttle body spacer.. it's not doing you any good. it's a paperweight for a multiport injected engine like your 5.9 is.
if you want to read a bit about them look for The_burning_rom and in his signature he has a whole thing about them.

 

How on earth did you bend a leaf spring?

 

All the torque from the TB spacer twisted the suspension [8D]

You could probably get a good set of stock springs from a yard as mentioned. Or got to a local auto parts store and see what kind or springs they have/can get for you. As mentioned, most aftermarket systems are just add-a-leafs to support a weakening stock spring.