I put mine in the dash. One on each side of the Radio. There are cavities in there large enough to put a very big crossover. I velcro'd them in place to keep them from vibrating. On is attached the the cluster pod. The other is mounted to the Airbag box. (No it will not be a projectile if the airbag goes off. It's on the side and mounted to hard plastic framing.) This also helped with my wiring. I ran two speaker wires from the amp to the dash and then used the factory wiring to hit the door woofers/mids. Then I ran two wires to the tweeters in the dash and I was done. Took no time.
Rescu2000
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2003 Liberty Sport 4X4
DIY Frankie Lift, BBS Rims, Aussie Locker Rear, DTT Front, Renegade Rack & Light Bar, Custom Front Bumper w/ Warn XD9000i, Custom Rear Bumper, JBA UCA's, Full Skids(Mopar, Kilby and Super skid), CRS Rock Rails, CB, EVIC, Nav, power dim mirror, (2) 8" subs under front seats.
http://www.cardomain.com/ride/2512777