Not everyone's cup of tea, but swapping in seats from an R171 was one of the best upgrades I ever made to my Crossfire. If you are not as particular about the looks of the button panel as I am, then it would be super easy, as the R171 seats bolt directly into the Crossfire.
p.s.- I am told the R172 seats are even better, but I have not looked into them, nor if they will bolt in as easily to our R170 platform.