P5 Help Audio

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2002 Mazda P5
I wanna get my sound system in my car, I got the wiring kit and I can't find anywhere to go though the firewall, I don't wanna drill it is there any place to go ? If I have to Drill wheres the best location
thanks
 
No need to drill. There's a grommet that goes thru the firewall not too far above the pedals under the dash.
 
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