New DD setup in a Miata

[greggtr]

Dont laugh...

And yes I know a Miata is not a good SPL car, but its fun and fast (turboed)

So here is the setup I am considering:

Parrot Andriod Smart head unit (3set x 6v RCA's)

2 x Optima D34 750cca batteries in the boot

DD S4b 4ch amp for the doors

2 x DD B2 tweeters

2 x DD AW3 3" mids

2 x DD W6.5 6.5" woofers

DD M4

2 x DD 9510i subs

On paper this should be a seriously powerful / loud set up, but there is a catch...

Due to the design of the Miata I can only fit one 4" round x 24" long external port per side to duct into the cabin through the parcel shelf. (fuel tank in the middle)

The box will be fibreglassed in, with the subs inverted in a ~2.5 cube box.

Will this work? as I can not fit more than 2 x 4" ports in the box and they can not be any longer or shorter than ~24"

the only other option, if this does not work is 1 x DD 9512 in the same box (last resort).

thanks in advance

GK