Sub Placement

I'm considering investing in a full sound system. I want my B15 sentra to still have trunk space but i want two 10" subs or bigger. There are indents on the left and right sides of the trunk large enough to fit the subs in and I'm wondering what the repercussions would be if I had the subs facing eachother. Any comments, questions, or ideas are fully appreciated.

no real negatives, you might get some cancellation at certain frequencies, but it won't be too bad. The main problem is you're going to have to pay close to $6-700 for custom fiberglass enclosures if you want to tuck them in those little "wells"