Is that my eyes....

http://www.superbikeplanet.com/image/archive/ivins/07/2.htm
....or were Harley Davidson running DOHC engines in "Superbikes" in the '70s?

 

I think 9a is the other side of the bike, showing the push rod tubes,
and what you were looking at was the rocker boxes.

cheers, Bill

 

I like the caption:
"Mert Lawill and friends look for things that don't look right inside
the Harley's engine cases."

Are they looking for Horsepower? Cause they arent in harley engines
LMAO!

 

Hmmm; I hate it when you're right!