A lot of money ($11,000) for a 30-40K motor that already had extensive work done to it. Did he have the smog equipment to go with the manifolds? Correct me if I'm wrong, but if the block was bored .30 you can add 5 Cubic Inches to the total engine size. Don't get me wrong I'm not saying you got a bad deal, it's just something I personally wouldn't do.