That was another cool thing about those trucks. The 366's had one vent on the drivers side, 427's had one on each side with 427 behind it. I always thought it was a nice touch. On my 72 the air cleaner is still attached to the vent. It's also an air brake, dayton wheel 60 series.
'65 C-10, 65 L-60, 65 C-80, 72 C-60 & and a bunch of old Chevy cars.
Never time to do it right, always time to do it over.
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