I have an original AM/FM (mono) radio in my 69. The band change (am-fm) is done by pushing one of the black buttons that also select pre-set stations. There's no slide bar gto select am/fm. Those are found on 'wonderbar' radios often used in Corvettes etc. The stereo am/fm has chrome buttons versus black plastic, but I believe the band selection is still done by one of those buttons, not a slide bar.