Thanks for the welcome
Actually the spacers are for the tires to move them out a little pass the wheel wells.But I was thinking about lifting it just a little too.so the spring idea is a great idea.will I need to adjust the steering an arms or will it be fine not too? I also would like to put 29 or 30s for tires with out having to make major changes.
Adding wheel spacers when unlifted is a bad idea, with sagged/worn out springs, worn out shocks, then adding width to wheels will only cause issues when turning
Adding a good set of springs and shocks from OME will make it ride and handle way better than it ever did stock. The front springs that came on a KJ are under rated, they are only 301 lb where they should of came stock with 340-350 lb springs, stock shocks were a joke. So if you have over 55-60,000 miles and over 4-5 years old new suspension is needed
an addition to yesterdays comments on wheel spacers;
they will change the radius in which your front wheels turn, sitting them out more they will hit the front and rear portions of the flares/inner fenders . When lifted you can get by with running them, but best bet is the right wheel width with proper backspacing , ( lifted best is 7 inch wide wheels with 4 inches of backspacing , sits the tire/wheel combo out to edge of the flare )