67 327's do not have vin stamps on them, so that alone indicates a restamp, even without seeing the out of line vin stamps. Only the L48's, Z28's and big blocks got vin stamps on the engines. The vin stamp on the top o the cowl matches the VIN plate, and both rosette rivets still appear to be original and in place, so this is a very early built 6 cylinder car, #143 probable built the last week of August 66 at Norwood. The cowl tag is from a much later December built car that has obviously been removed from its original body (look at the area around the rivets) Can't explain the stamp under the heater as it appears to me to be 7N750322, which is not a valid 67 (or any first gen Camaro VIN) If it was 7N150322 it would be a close match to the cowl tag, but the body appears to have been red originally, as the paint around the elephant ears seems to be the original color, and the tag indicates its from a Turquoise car with a black top so that doesn't match the remnants of the paint. Quite a mystery, but there are parts from two cars in this one.