The photo I sent of the speaker with bracket connected to the back of the radio is the original setup out of my 65 K10. I am not sure of the origin of the other brackets they may be 60-63 or gmc.
65 K10 Longbox Fleetside Big Back Window Custom Cab 65 K10 Flatbed Old School Parts 60-66 (208)946-6173 [email protected]
