Slant 6 value in the market

So everyone i talk to doesnt think a Slant car holds any value. A car with a V8 is worth more they say. I am selling an all original Slant 6, 67 Barracuda, driven in California for most of its life until 96 its been in MI. I dont need it and i need space.
I say it is up to the person what they want but to say it holds no value is incorrect. According to the appraisal and the books it holds value.
We all want more power. All my other cars and trucks are V8s.

What say the masses?