The five speed wasn't technically offered until 1977 in the US (which is a 280z here), so previous owner was just super cool and swapped one in I guess
(IIRC, I believe the US five speed box is different from the JDM/ROW box anyway, though I don't know the specifics... I'll take any of them to replace my four speed
Looks like an early bumper car, which is nice... I envy people with the white/tan interiors, need pics of that, hope it's held up well.
I've always said I'm glad that they made the 2+2s... I've always said I'm glad they didn't only make 2+2s
The aspect where the 2+2 looks best to me has always been straight on from the back; looks a little wider and more angular, and has the little gills in the panel.
Make something cool from it.