You could have the dealrer do it----my buddy that I raced with helped me----pretty easy to do.

Makes a pretty decent handling change----I would also put in the Z51 sway bars----however these changes technically mean that the car would run ASP....if that matters to you

Good Luck

I read where someone swapped the F55 leaf springs with Z51's have you done it and how hard would it be to make the swap? Does it make a big difference?