Eibach makes springs for CJ pony parts.
http://www.parts123.com/parts123/yb.dll?parta~dyndetail~Z5Z5Z50000016d~Z5Z5Z5ACSUD~P169.95~~~~S2OL10Q63974131123650H~Z5Z5Z5~Z5Z5Z50000016d
they are a fair amount cheaper than the Eibach labeled ones. Something to look into