The story regarding its development was interesting. GM USA
wanted to keep tabs on what we were doing and the final design was
to be approved over there. Anyway, there was a lot more of the
1960's design to be put in place but through good ol' Aussie
ingenuity the head honcho was taken out, got into a 'happy state',
and he signed off on what we wanted.
A very good resource for all things HD/R is the
HD HR
Holden Archives
OK - the purists notice the absence of the correct air cleaner
and other details - but all will be restored in the fullness of
time!
