I sent my 4x4 coil over springs for front and the coil springs for back to someone on here to try on his 4x2...if for some reason he does not want to keep them you are welcome to them...but I believe he is already talking about having them installed.
Not sure how much lift they give you versus the 4x2 springs....but I gave him all four corners to try.
Good luck... I sent mine to jcphockey16 on here. Found a thread that shows it makes a pretty good difference in ride height...as leveler for front if only using front coil over springs...or as full lift if you use front and rear.