Small retro (but modern) seats?

[Nonhog]

Working on a 66 Volvo Amazon with my kid. (he is 17).
The car isn't really Lateral G friendly but the seats might be?
I'm 50 and wouldn't mind recovering the factory buckets(covers alone about 600$) and adding headrest (safety-keep Mamma happy) or using a sixties style seat.
Corbeau classic.

Junior likes the JDM seat off of e-bay. Price sure is right.
Bit too modern for my taste but look decent? Not that its about me. LOL

Looking for ideas. Thanks in advance.