As for wiring up without the factory amps and all then yes you can. You will need to provide amps to handle that and use the wires in left rear hatch area at the amp to connect the new amps to the speaker wires unless you want to run all new speaker wires (lots of work).

The factory amp sounds really good when you get it working with the Seicane. Love the sounds quality.

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Just BMW's - All cars and trucks was two pages long
1994 318is
1997 528i
2000 323i
2001 X5 3.0 auto
2005 X5 3.0 auto
2011 535xi auto
2013 X5 xdrive35 Turbo
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Aftermarket E53 Radio Install