Should I install 18inch Pyle sub in my 04 Pontiac Grand Prix?

airaiboi808

New member
I want to install an 18" sub in my 2004 Pontiac Grand Prix. I been looking for sites for a box for them not able to find one. Is it a good idea to install and 18 inch sub in the trunk of my Grand Prix or just go with 2 15inch. They are Pyle PL1890BL 18" 1800W Blue Wave High Power Subwoofer.
 
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