Trick Flow 440 heads, The Real Deal?

So, anyway, I'm getting most of my application information from the TrickFlow instructions I downloaded from the Summit Racing web site.

[ame="http://static.summitracing.com/global/images/instructions/tfs-6161t784-c00.pdf"]http://static.summitracing.com/global/images/instructions/tfs-6161t784-c00.pdf[/ame]