Most of todays car guys are not of the age that they would had those kinds of cars as stockers back then anyway, so there are probably no real nostalgia issues.
We are, after all Hot rodders for heavens sake, If you want to make it modern go for it.
In 64 I drove a nice 41 ford two door sedan to high school, but if I had the exact same one now I'd cut it up anyway like I would have then if I could have afforded it.
In 82 I did find a fairly nice 40 Ford deluxe sedan delivery. Soon it lost the flatty, and straight axle for a BBC, an A-frame front supension, and a 7" channel.
Why would anyone leave them stock?

John