With interface 800 having the ability to communicate with smartphones and tablets, a user replacing a factory stereo is provided with additional replacement options, including the ability to integrate an already purchased device such as a smartphone or tablet, obviating {HEAD ~ the need} to additionally purchase {TAIL ~ an aftermarket stereo} 
to additionally purchase
With interface 800 having the ability to communicate with smartphones and tablets , a user replacing a factory stereo is provided with additional replacement options , including the ability to integrate an already purchased device such as a smartphone or tablet , obviating { HEAD ~ the need } to additionally purchase { TAIL ~ an aftermarket stereo }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL