[rheavn]

I was able to use the numbers on the bottom plate, along with the air bag measurements to narrow the air bag to one of two air bags. In the Firestone catalog they looked exactly the same. I spoke with a very helpful woman at Firestone customer service(1-800-888-0650) who stated the catalog was wrong on the upper plate of one that I had picked, but the other one is correct. On February 18th I had a second conversation with Firestone tech support that contradicted the above conversation. Tom had given me a front air spring number, but tech support said that air spring would not work. At this point the front air spring number has not been identified. I apologize if this has caused anyone any frustration.