I just bought a 2001 LS with 25K geezer-miles and it is a real chore to keep it in the lane on the freeway (wish I had taken a longer test drive). Also when encountering those little grooves they put in some of the freeways around here it gets pretty scary,and forget about it if you get any cross wind !
I will ask an alignment shop if there's anything he can do. If not I will be listing this beaut in the paper. Too bad 'cause otherwise it's a great car but at this point it is dangerous.