head identification

[Chris Semple]

> NF heads are unique among 10v heads in that the intake valves are 2mm larger 
> @ 40mm. That's the easiest thing to find. Part numbers and casting numbers 
> are the same between MC and NG heads (I have both literally in front of me 
> as I type).
>
> -Cody
>   

Same intake valve in the NG 2.3L used in 80/90/100/GT. But yes, it's the 
biggest OEM valves for an injector-in-head car.
NF castings = MC castings.

-Cheers
-Chris Semple
Concord NH
'84 4000q
    '08 E350 Club
        '70 Unimog 406