here is his reply
" I apologize for taking so long to reply but we just returned from the Mopar Nats. I checked the numbers that you asked and cannot read the core support. There is too much paint (metalflake gold plus the clear coat) to read the core support stamp and the door sticker is long gone. This is definitely a customized '71; the VIN tag on the dash has never been disturbed, is still attached with the factory 37 year old hex rivets, and decodes to being a 1971 model. Hope this helps. Dave "
nice guy, neat car.