Yes, I know the body was a pain then, but I have since bought another of the same issue and if you assemble the body first (using the chassis plate as a jig) it goes together like a normal kit. Did the same with the 59 Retractable. Yes, I knew and know the front is incorrect but the AMT '57 parts fix that.
I have a 1:1 '57 Fairlane 500 in the garage.