R35, 10 watt FM stereo MPX / AM, is in my 74 barracuda as $209 option, add the rear seat speakers, $29 (L2), and you get the rear fade knob, with that circuit in a small tin box (no longer used) for mixing the sides with the center speaker. The 10 watt radio is under rated and requires 150 watt rear speaker replacements. A new center speaker is now used for a two way radio external.
The dash frame has pockets for the side speakers with curved pot metal grills. I had to open the pockets up to fit the magnet on any 50 watt replacements. The glove box hides the filter, 30 watt graphic EQ Amp, and 10 meter, 100 watt kicker on a plywood deck. The mini switch for speaker radio/cassette (,, Gonna have to up grade to a CD deck) switching, is inside the top of the ash tray opening and a 20db AM/FM radio signal booster is under the radio next to the vent pull. The two way is in between the vent pulls.
Slap the Lil Wilson on the trunk and were the "Bandit".