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

halifaxhops said
I have a 645 slant/auto From what I can tell they only made 1800 or so slant cars and a ton of 273 cars. I personally would think pretty rare. I would save it as is.

A lot of times the v8 cars got used up and are in bad shape or gone. Often the /6 cars stayed in Grandma's garage and not driven a lot.