18" 6th and 8th order trunk?

[KRYPTO 10+ year member]

I've been struggling with box idea's for a several months now. in need of input and idea's. Its for an '89 Town Car so the seats dont fold down, but does have a rear deck.

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[Kangaroux 5,000+ posts]

How much space do you have to work with? Bandpasses for 18's are huge

 

[KRYPTO 10+ year member]

fully loaded BTL

 

[KRYPTO 10+ year member]

I have approximately 17cuft of working area, maybe a little more.

I was thinking sub up front facing up with rear chamber in the rear facing up(slot port) and front chamber on top of both firing at rear seat/deck.... large mouth/slot opening