I worked on installing my new 4 leaf springs today. My biggest problem was getting the rear shackles off. I ended up melting them with a torch. Then they came apart. When I got to the parts house, they didn't have the rear shackle bushings. I'll have to wait til monday, and go to the local spring shop.
General Spring has 4 leaf rear springs for our cars. I believe they make them in house. http://www.generalspringkc.com/index.php?p=catalog&parent=105&pg=1 They are out of Olathe, KS. 913-829-0619 I just purchased new replacement leaf springs for my 97 Toyota Tacoma, 2-wd truck. Seems that after 318,000 miles, the leafs developed a reverse arch. 8-(