hi all just got my hands on a 57 imperial. Has the 392 hemi. Push button trans. I can’t find the build sheet anywhere in the car. It has certain features that I think it’s imperial custom. Has the benzinomatic quick defroster, both exterior mirrors. And a imperial crown interior package, but no crown on the fenders or over the name plate it has power everything. The data tag says it’s an imperial base model. Stupidly I didn’t take a pic of the whole car. I will get one soon.