Killbee - that car shares the same steering rack with many other chrysler/dodge cars
your GS is of the family known as G-body which includes the dodge daytona and chrysler lazer
a steering rack from a P body (shadow, sundance) H body (lebaron GTS, lancer) AA body (spirit, acclaim, later LeBaron 4door), K body (reliant, aries) and others etc will all fit
pretty much any 80s-early 90s chrysler FWD car EXCEPT L-body (omni, horizon) and the N-body (mini-vans)
hopefully this may help you find one ??