This will help and probably all you need to know.
http://pantera.infopop.cc/eve/...0045562/m/6360028562
I think they should be sonic tested to see how thick the thrust part of the bores are. Some seem to be too thin for performance usage especially on a stroker.
I would not expect to get them cheap either. Everyone knows what they are. It's not like it came out of a delivery truck.
They were special order then but available through Ford.
I couldn't even venture a guess but by comparison a 427 Ford block PROBABLY will cost you $5,000.
http://pantera.infopop.cc/eve/...0045562/m/3610011504
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.