I just realized something, I think the reason why the V/M record changer in this radio was a drop-in fit was because this thing may have originally had a V/M Sourced 78 RPM Record Changer in it originally, and I think V/M sourced/made changers had a fairly standard mounting screw pattern on all of their record changers including their old 78 RPM changers that made their record changers interchangable if you needed to replace one down the road for whatever reason.
I'm planning on going to get this radio tomorrow hopefully as long as it hasn't sold already.