I just replaced my Nissan (Clarion) radio with a Sony xplod series. The
other radio died. I got a wiring adapter, did the deed and everything is
fine.
The one thing that aftermarket radios do not have is the diversity antennae
capability, so you end up at some intersections inching forward to cancel
multipath reception problems, which you don't really hear very well while
driving.
So, in answer to your question, replace the speakers without problem.
Depending on the size of the amp, there may be enough space in the dash.
> Are the speaker outputs from the basic non-Bose radio/cassette
> anything special? (in contrast to the special output from Bose to
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