Radiator overflow bottle

I'm cleaning out a shop. I found this but don't know what it fits. Do any of you know? Thanks.

is there a number on it anywhere? (should be). not sure where to go with that but it'd be where I would start

if there is a number there is a page on the MyMopar site that has a x-ref for Mopar part numbers.

Unfortunately no number. Maybe it is an aftermarket from a parts house. It seems to be made for a specific application. Thanks. Maybe someone will recognize it from their GTO, International Scout or whatever.