jl Audio 10w6v2?

my friend wants me to put in 2 10w6v2 subs in his bmw 3 series
now what i plan to do is have the subs face the inside of the cra when the seats are folded down, anyone have pproblems when doing this? you lose any of the bass than if it would ire the subs the other way??
also what do you recomend for an amp i told him eitherthe new rockford amps that cam out puts about 1200x1 @2 ohms
or the jl audio 1000/1


im also going to put them in a sealed enclosuer because im limited on space , i was thinkin about .5cuft per subs what you think about that??

let me know what you think or any suggestions
thanks

Its fine to face the subs inside, you won'e here pounding base beause the vibrations are not hitting any walls, they will be going straight to your ear therefore it won't sound as loud but it will be a lot cleaner.  the trick is to make a box so that its air tight from within the car.  No gaps between the sides of the seats and the bos.  You could run either a 1000/1 or 500/1 they were made for those W6's I wouldn't put a rockford amp on them, its just not good enough for that type of quality speakers.  In fact, I have a 500/1 I'm selling if you give me a budget that you want to spend I would gladly sell it to you.  If you have any other questions let me know...hope that helps

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Sonic

Pioneer AVH-P4000DVD
Zapco 360.4
Zapco 500.1
Zapco SP-4SL Processor
Two JL 10 W3v3d2
Alumapro 15 Farad Cap

so if i face them in the bass wont hit as hard???
and i have to seal the surrounds of the box against the back seat
whats the best way to do that just build it tight against it??
is the amp new? how much its not my budget its my friends so i have to talk to him
thanks