Just picked up this 78 non-AC car and I was looking at the dash closer yesterday and I think the previous owner cut in an additional guage hole. The car has original motor/trans etc, but the previous owner switched out almost all the stock items (now its elect cooling fan, holley carb, msd ign, etc)
From what I remember/know, there should only be 2 guage holes (fuel/batt) to the right of the speedo for non-AC and the other 2 holes were for AC vents.
See picture.
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