I had a daily driver '69 with a '85 305 V8 and a TH350 automatic transmission and I got closer to 18 MPG. I don't know what my rear end gears were, but I would guess they were 3.08 to 1 based on hole shots were only possible on loose gravel and it wasn't screaming at highway speeds.
The thing is, the '69 did not turn heads like my daily driver '50 does. They both had similar well-aged paint jobs.
Having said that, I would jump all over a fully restored '67-'72 if the price was half way reasonable. I do miss my '69.
