For a car not built for the North American market to be sold in the US, it must be 25 years or older.
Calculate the cost of shipping from you to either East or West coast of the US. Takoma Washington or Long beach, California, in the west. Miami, Virginia, New Jersy. Boston or Portland Maine in the east. Gulf Coast is also possible - Huston Texas, New Orleans for example.
Include shipping in the price you want for your J80, so the buyer will know.
Take many pictures. Post in this forum, and give as much information about your vehicle as you can.
Good luck