Radio Delete Question

[red71c10]

If the SPID doesn't list a radio, does that mean the truck came without one when new? My '71 is a base Custom model without much candy. There is what looks like a factory speaker in the dash and an antenna on the fender. There's an aftermarket cheap stereo in the dash now. They didn't have to cut the dash so I'm putting in a factory AM radio that I scored from the local wrecking yard. I was able to get the radio, a better speaker and all the brackets for $20! It even has the plain standard knobs to match my headlight & wiper knobs. I'm definitely going with a radio, I'd just like to know if my truck originally came without one.