15" Diamond D9 in a Hatchback

[NJTStang11 10+ year member]

I have my stereo all together now and am about to pick up a car.

Car will be an integra, celica, camaro, or a probe (all hatchbacks)

Just have a couple questions after searching.

What is a good box size for a D9? I was thinking around 3ft cubed.

What tuning for a D9? Know they get good SQ, so I was thinking 32ish?

In a hatchback, what is the best sub/port direction? Both back, both up, mixed?

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