What you say about buying a Big M block is true. I think they are looking for one of the folks that highly value numbers matching cars. People who will pay huge sums of money to get the exact original part. That is all well and good if that is what blows up your skirt. I have a good friend that is like that. He has a GTO and a Firebird that sit in the garage and never see the light of day because they might get used or damaged. All the numbers match and no one enjoys them except the owner there in his garage.