Well it really isn't that much work to convert to yj springs. The rear is the same on both cj and yj. The front just requires a rivet to be grinded off and the perch moved 1 hole forward. I replaced my front and back perches with HD ones so they had to come off anyway when I did it.
I ran a 4" rough country cj lift for many years. It was stiff and had less flex. I switched to a 2 1/2" Old Man Emu and it rides much better and has a ton more flex.
I don't think OME sells anything for a CJ directly so I had no choice but I was going to upgrade regardless.
It's red too.