Gonna try this on my bike this week.
kenwood kac-m1824bt bluetooth 400 watt waterproof marine stereo. 131.00 from Amazon.
I am going to mount it somewhere on bike and run new speaker wires to existing speaker locations. I will run either the JBL speakers from Dirtstiff's thread, or I have Polk db something or other left over from my VTX1800 days.
Stock radio will be unused and untouched. 90 watts rms bridged into 2 channels should be a major improvement, and I only listen to streaming music from my iphone anyway. Jim