Greg I put Rubicon springs on my SE and got 1.6 in front and 1.3 in the rear or something like that...
However......here we go...I could NOT measure a difference in the spring height from the SE and Rubis springs..so the Rubis must have just been stiffer.
I've also read that the Rubis springs are the same as all TJ 6cyl/ Hardtop springs..but I have no idea it thats the case or not..
No matter what everyone says the wifes Rubicon rides different from my SE or my new Sport. The Rubicon has a tighter and stiffer ride. By putting on Rubicon Springs and shocks on my SE I was NOT able to duplicate the ride so theres more too it than meets the eye so to speak..
Not sure if putting Rubi springs and shocks on a 6cyl TJ would give u much..Unless the springs are free than nothing but a few hours of time to loose..
I just had to do an alignment when I swapped..