Rarity (and desirability) of a slant six/ factory 4 speed?

gregcon said
I owned very clean 65 273-4speed cuda.

It was a sweet car but by no means gonna wrinkle any pavement. And limited hot rodding potential. The early A body is better with a Slant.

I'd have to disagree with that. I've had both, neither stock. Liked both, but a 273 has all kinds of potential.