I ended up using small nuts and bolts (with washers) to secure the base of the speaker wall mount. Everything worked out GREAT!

I've got a 2003 FWD base Vibe (automatic). I was shopping for a Chrysler Sebring.

Just wondering how you secured the speaker mount to the center console. Did you use self-tapping screws and just rely on the screws providing sufficient hold into the plastic or did you nut and bolt the base?