08 Cooper S Aftermarket Sound?

[Romo]

Hi all,

I'm planning on purchasing a MINI within the next week, and I'm very excited for it. Originally I had planned to buy a Chrysler 300c ( I know, I know)

Anyways. As it seems to me, the speaker sizing is the same for the two cars. I have a pair of Alpine 6.5"s which I understand will fit the front? and 6x9's which seem to fit the rear.

As far as amplifiers, I've got a 4 channel Alpine MRP-F600.

I had originally planned to put a set of 12" Alpine type R subwoofers in the 300, powered by an Alpine MRP-M1000 amplifier. Is there any way to fit a pair of 12" subwoofers in the back of a Mini without losing the rear seats?

Also, is there an adaptor I can purchase for the stock headunit I can buy, as it doesn't seem like it will be possible to put an aftermarket headunit in the car.

Sorry for all the questons!

-Alex