Join Date: Mar 2005
Location: Washington State
there is NO difference in springs by model (s, sahara, rubi) the Only difference is in the spring number
look for the last two digits on the tags on your springs vs. the 'new' springs; For fronts they range from 13-19 and rears from 54-60 (the higher the number the 'stiffer' the coil, and the less 'sag' when loaded-or 'lift' if the loaded weight is the same). each individual numerical increase can yield approx. 1/3 of an inch.
depending how your jeep is optioned, it is possible to have the same springs numbers/rates already.
the biggest gain most people see is going from springs from a loaded hardtop JKU w/ the towing package and installing them on a 2-door, but even then, its all about the spring numbers, NOT the model.
"Gimme three gallons of low lead; two hot dogs and a strawberry soda..."JGW