Yes, he bought everything at NAPA. He did say that the springs for the rear are longer than the front, so maybe you (or the parts supplier) mixed something up? (Just trying to help here)
Raybestos only shows the one part number and uses both for front and back which is wrong from this setup. I'll check with Napa and see what I can get here but their web site shows the same part used for both front and rear too.