my leafs sit flat in the rear and noticed tha when i hit inperfections in the road my *** end is all over the place...will i benifit from explorer leafs? will they still have arch unlike my stock leafs?

 

well its all about arch....while a younger set of expo leafs will have more arch...an older set will have the same problem yours has....im not sure if the bad leaf springs explain your problem cause im not sure what you have done to your truck

 

With the *** of your truck all over the place I would look at the bushing.