Hello, My new Impalas Body Tag (Drivers Side Firewall) is as Follows...
ST 66-16837 LOS 3496 BODY
TR 869-B T-T PAINT
I get that 66 is year but all i can find is 16837 means ss 2dr. V8, and 869 is Fawn Trim.
Other #'s such as 11C, and W 2KMS are a little more difficult...