I have made some progress with my SX/4, which I have started referring to as "Humpty Dumpty" because I'm trying to put it back together again! :-)
I found a set of flares and rocker covers online; however, the seller accidently shipped me 2 left front flares, but no right front flare! Argh!
Mechanically, the car checked out pretty well. It needs front pads and rotors, but the rear brakes are great. The front end it pretty tight, with the exception of a little play in the pitman arm. The radiator and heater hoses looked pretty old, so I already replaced them. Since I don't have any idea how old the oil is and how long it has been since it's last tune up, I will do a full tune-up and LOF next week. One of the radio speakers was blown out, so I replaced that last night.
It is having some issues with the starter not engaging, but I have improved that issue somewhat by cleaning up the contact at the bendix.
It looks like most of my work on this car will be interior and exterior cosmetics. Frankly, the rust isn't all that bad for a 35 year old Michigan car.
Thank you to everyone for your help thus far, I really appreciate it!