port up, sub up in trunk

I made a previous thread because it is going to be hard to get a large box into my trunk. I realized i could take the spare out and build a false floor and it would be much easier. Anyone have any luck with sub/port up?

you can do sub up port up and get rediculous numbers out of your trunk. google chris fish, from silt colorado does a 155.1 out of his trunk! subs up port up

http://usaci.forumotion.com/general-discussion-f11/trunk-classes-t9928.htm

 
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Yeah, saw that too, was like ??? wtf! They do know there stuff, I usually just roll with it!
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