I just checked my 72 Nova project car, the vin# 5th digit shows D which would be a 250 6 cyl car. But then I checked the cowl tag and it shows a 11427 code which is a V-8 car. The cowl tag matches the colors, year etc, and both look original and not tampered with. The car itself came as a roller, but had the V-8 motor mounts, and the V-8 exhaust manifolds which are factory clearanced for the steering box, and the exhaust connected. The rear leaf springs are the multi-leaf with the 8.5 rear, drum brakes all around. This was a Willow Run Car, question is did the factory make mistakes like that?