NG head on an MC, w/ex. valve transfer?

[auditude at cox.net]

Hello again,

Thanks for the info on the K26 on a 3B.  That's good to know.

On a separate tangent, I know that the NF/NG heads have 40mm intake valves, vs. 38mm
versions in the MC heads.  I thought it was a simple swap involving just replacing the NF/NG
exhaust valves with the sodium-filled ones from the MC head.

But looking at this picture of and NG head, it looks kinda funky to me.  Like it's different on
the sides or something.

http://www.audifans.com/marketplace/images/parts/3276.head1.JPG

Are the castings different, or am I just not used to looking at an MC style head from that
angle?

If they are different, is there anything that would preclude putting an NG head on an MC,
using the MC's exhaust valves.  The idea would be to get the larger intake valves.

Or, do you have to get the bigger intake valves and install them into the MC head?

Thank you, thank you very much,

Ken