Nick, it's a 396 and they clearly state that. I think you are mistaken about bidders at the auctions. At the numerous Mecum auctions I have attended, people in the staging lanes that intend to bid look the cars over very well. Checking casting numbers and using their smart phones to get educated. On custom and modified cars, not so much. For reference, the beautiful '69 L-72, rock crusher, documented Biscayne got up to $80K. $100K might be a stretch for your car.