of the hundreds of 8 tracks at the swap meet, I tried to put together a good collection so if when I get an 8 track player, my 69 Dodge will be period perfect

they were a buck a piece

I've heard some people go so far as to put change in the ashtray or on the carpet that is no newer than the year their car was made, and get matchbooks from around that year, maps for the glovebox from that era, etc