Really depends on your radio. Our OEM classic radios require 8-10 ohm speakers and it was set up for a single front radio unless you have the stereo option.

If you only have the OEM radio, then duel speakers should not be any better. If you install new speakers 4 ohm with your classic radio then it will damage the radio.

If you have a new or upgraded radio then the duel speakers will be much better since it will be stereo tuner.