i have a 95 4 door SE and i could most likely do 2 15's sealed. my 12" AP fits nicely under the rear deck in the back of the trunk(the "smaller" part of the trunk) and it is 2.5cf
I ended up passing, with school coming up I can't be spending a lot of time on my job when I'm not there. I've still got the guys number I could always call him back and see whats up.
But for the GP , I'd get one with a 3.8 at least, the L67 (3.8 supercharged) is a strong motor with the ****** its hooked up to. They have a problem with the intake gaskets being eaten away by the dex cool, so ask the dealer to fix em before u buy it, would cost a few hundred bucks when it goes.
I've got a 2 door, with around 78K miles on it and I plan on it lasting a lot longer for me.