I am going to upgrade my 1966 Chrysler 300 convertible with a 2005 radio unit from a Pacifica. I have the radio, wiring harness, antennae and adapter, two new correct MOPAR speakers, connectors, etc.

The donor car had only two speakers wired in the pigtail from the radio. and blank spaces for the others. I think that I have all the wiring circuits identified by color code as well as pin number and location


My question is--Do I need an amp or will the radio output be sufficient for just two 6x9 standard Mopar speakers? The seller did not know if the car had an amp or not as he no longer has it.

Any help would be greatly appreciated.