the SC's main problems you have to look out for are suspension pieces. the lower arms can be big bucks running you a tad under a grand in parts just for the lower suspension arm because the bushings and ball joints go out. otherwise i found not too much goes wrong, you should look for a nice SC#00 (3 or 4) thats been owned and baybied by an older owner. (because usually they dont do what us guys love to do) also look at the gauge cluster and you might find burned out needles that are fixable but still on the pricey side. and of course when looking for a car accedents in the history are not good and make sure the transmission is smooth. and after 100k miles or so you might want to consider changing motor mounts and trans mounts, along with other rubber suspension pieces.