Proof of AM/FM radio availability in 1969

[truckster]

I think it's important to note that the invoice only says AM/FM radio. At the dealership I worked for way back in 1975, you could order an AM/FM with 8-track or cassette. The dealer had a local radio shop install Clarion stereos.

The fact that you could order it from a dealer DOES NOT mean it was necessarily available from the factory. Just look at the Hickey Enterprises parts; you could get those dealer-installed, but not from the factory.