Upgrading Bose Stereo Amp/Speakers - Factory Integration Solutions?

optiontrader

Not anytime soon, but I know down the road I'll be looking at upgrading the Bose stereo. I'd like to keep OEM look/functionality.

Some questions:
- With the double-DIN kit, I know you can retain the use of your steering wheel controls via the PAC adapter. Can this also be the case with the bluetooth controls? It may be too much to ask, but can you also use the factory mic near the rearview mirror, instead of routing the wire for the aftermarket mic?
- Has anyone used the factory integration offerings from Alpine, JL, JBL, etc. to use aftermarket amps and speakers with the Touring package?
- Finally, a more specific question: will the ring radiator tweets from an SPX-17PRO (Alpine) set fit comfortably in the stock dash locations?

Thanks!