Nice work!

 

Sweet! Love how it doesn't take up any space.

 

Probably 1/3 of the boneyard HHRs have them. Low demand, should be cheap. But the amp powers ALL the speakers, so if you want to use that, you need the harness, or at least the connectors and then expect to get the wiring diagrams and do a lot of rewiring.

I don’t play the radio very loud, so I just used the speaker, box, and grille, and bought a separate small amp for just the sub. All the other speakers remained powered by the radio. I still have the amp, will prolly list it in the classifieds some day.