According to the build sheet, my 79 came from the factory with an AM radio (U63) as well as single rear speaker (U80) on the rear shelf driver side.
I purchased on Ebay what I believe is a correct 79 AM Delco Radio part number 16002110. On the radio there is a sticker that says "Use ungrounded speakers only. Two wires per speaker."
Based on what's stated on the sticker, I would need a 4 ohm speaker right?
Thank you in advance.
Signed, radio novice.