1966 rear factory swaybar?

Hello,
My name is Nick and this is my first time on here. I have a 1965 Dodge Dart Gt. Yesterday, I bought a 1st generation factory sway bar.
The guy I bought it form also had what he claims is a rear factory
sway bar. He says that there were both on his 1966 Barracuda S
which is how he ordered it. I bought both complete for $200. I cannot
find any info on a 1963 to 1966 rear factory swaybar. I talked to Rick
at Layson's today and he has known of several. usually included in a tow package. Does anyone know anything about this. I would really appreciate
any information on this. Thank You and God Bless.
Nick