Small Block Head Flow Chart

Oh, also how they are OOTB, what prep was needed and if you own/run/ran these heads, tell me about them and there in and outs if you could.

I’m just wondering….

I was told they flow real well out of the box. They also have a different valve angle (16 degree) that requires a different piston.
I know TTI makes a header for them.
about all I know