I think most (majority) would like to see these heads work on a completely stock 427 myself included.
Once you start changing the factory specifications to "custom" > have to mill this, drill that, buy this part, different valve cover angle > to run them interest will drop off.
Great someone is looking in making a set though!
All of our solutions will provide exactly what you describe - a bolt-on package which will work with a stock 427 block, tunnel port intake manifold, stock exhaust (in the stock location). and stock valve covers (in the stock location). As we get closer to release, we will post details in the Vendor Classifieds, but for clarity now here is the summary:
We will offer two tunnel port head packages:
Maximum Performance – this version will have canted and angled valves, and use individual shaft mounted rocker arms. This version will require modifications inside the ports of the intake manifold. We will offer the recommended manifold modifications as a service, and provide instructions for those who wish to make their own intake manifold modifications. We expect this version to easily flow more than 400 CFM.
The Maximum Performance version will be offered in a package which contains all custom items needed to assemble the engine - fully cleaned and assembled heads, rocker arms, rocker stands, intake gasket, and ARP fasteners. No searching required.
Original Fit - this version will use the factory rocker arms, and doesn't require the manifold modifications. The Original Fit version is for people who are more concerned about preserving "original" than maximum performance. The performance of this version will be better than the factory tunnel port heads, but will not be as high as the Maximum Performance version.
I'll chime in about FE VC's because that's what I specialize in in my collection.
Not interested in TP heads since my cars are/will be street driven.
To me as long as a stock VC can be mounted on a Head/intake combo with some sort of a stepped adapter (even thought it may be further away from the block). I wouldn't mind the minor difference in appearance.
Just my point of view (POV).
Richard >>> FERoadster
You would be happy with these heads in a street driven vehicle. The intake port will be sized correctly for the valve size (the factory intake ports are WAY too big), and the exhaust flow will be the correct proportion to the intake flow.