Engine Masters Episode 77 - TorqStormed Slant - Spoilers?
I think Dulcich said when he was putting the engine together, he wasn't considering adding boost. So I guess that's why he used a stock head gasket. He also used a cast crank and pistons, which Steven Brule' and David Freiburger though let go. Dulcich said head gasket right away, and was right.
I don't know if they are still running the special, but I got a great price on Motor Trend channel, $24 for one year. It's worth it, with all the back episodes of a lot of shows I like. I'm not sure I'll renew at full price, but I'm getting my two bucks a month worth now.