I installed a set of Kenwood eXelon 4" speakers in the kick panels of my '69RR. Bought an aftermarket set of the panels to install on and kept the nice OEM set of kick panels in case the looks of speakers there started to bother me and wasn't worth it for the sound quality/addition. The magnets on the speakers will settle into the open area of the hinge pillar is for the lower hinge bolts. Speakers come with a cardboard template to properly cut out the area needed as well as the mounting screws for the speaker to the mounting ring. Haven't seen a set of the B-Body aftermarket speaker incorporated set for our years, but the other ones I seen for A/E Bodies had some pretty crudy speakers in them.
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