A Cautionary Tale

Is this an aftermarket oil pressure setup? I don't remember these from the factory. Could you convert to a standard electric gauge with a sending unit? That would seem like a good idea to me.
Shoutout to Gary from Performace Auto, small shop in PA did just that.
He incorporated an oil psi guage face into the standard Oil "idiot light" guage. Brilliant!
Looks original, until you look closely.
Screenshot_20200823-234342_Gallery.jpg