[TimG]

I'd recommend taking pictures of the factory cut outs to the birdcage for the sidepipe installation if it is a factory sidepipe car. It looks like both sides still have the dog legs attached, these are removed on factory sidepipe cars. I've seen these on factory sidepipe cars if the front clip and rear quarters are replaced. No way to tell if it is a radio and heater delete or a sidepipe car from the Warranty Plate.
That's why some "before" photos are always good for verification.