72 B-bodies got them as part of the HD cooling package. They mounted on the driver side. Reproductions are available, but very pricey. I'm sure one could easily be retrofitted to an E-body.
Standard cooling cars did not get them. Not sure about prior years, or E-bodies.
I need to spend a day in the salvage yard looking for an OEM bottle that would fit and look factory correct at a glance.