Indy 6.1 w/5.7 CNC'd heads

I'd like some information Nd have ask if anyone has tried one of Indy Cylinder Heads special hemi 3rd Gen motors? They look rather good for a 60's A-Body like I want to do. Any experience with them? Dual quad, I read the Mopar Muscle article on it. Also I'm more interested in the FAST system with this combination.