I think the fronts are the same. The rear qtr is different because of the fender skirts. If you can't find one surely there is a body shop, boat, or surfboard place around there that could fix it for you.
I'd be real surprised if they don't have one over at Ontario Pick-a-part, I think it's on Hamner north of Mission Blvd. Sometimes they have some over at San Berdoo. Sometimes they have some over at the yards in Stanton/Buena Park off Beach Blvd and Katella. Don't waste your time going to the one off the 60 Frwy west of Riverside, they never have anything Caddy worth wasting the 2 bucks to get through the gate. Have you tried those places?