You could take it to the Kauffman tire shop near my house. They will show you what's bent, because they did on my 88. One of the trailing arms (only 88's have them) was bent. I removed it and hammered it straight, and put it back on. Good as new.
Rodney Dickman sells suspension parts that allow more adjustment than stock. Depending on what's wrong, he may have something that will allow you do do a good alignment.