The episode takes place on "November 6, 1980-something", yet one of the plot points revolves around getting tickets for WrestleMania IV (1988), which took place on March 27, 1988. Furthermore, the fake tickets list the date as Friday November 7th. No WrestleMania pay-per-view ever took place on a Friday or in November.
When Barry & Adam are going through the various wrestling memorabilia for Murray, one of the items Barry shows him is a 'Macho King' Randy Savage WWF Wrestling Buddy. As always, every episode is set in "1980-something", but this particular Wrestling Buddy was not sold until 1991.