HELP! Reg Cab Sub Questions!

I have a 99 Reg Cab Tacoma and I'm looking to get a sub or two for the truck. I'm debating over one 12 or two 10s. However the problem is I need help on the demensions for the box...and what would sound better (I want a good thump!). I've found two 10" enclosures that are 6.5" inches deep and I think they'll fit fine but there's that dang jack behind the passengers seat, I'd probably have to remove that. But if the 7.5" deep 12" enclosure fits then I'll probably go that way...idk what to choose!! Anybody have anything like this or opinions on the subs???

 

I have 2 tens in my reg cab. With the amp under the driver seat. There kicker shallow mount. But there plenty for me. If I turn it up on the right song it will make my chest hurt. You can order the box with the subs already installed of hifisoundconnection.com I think thats it.

 

I couldn't find that online. I found everything online and ended up getting just a single 10. A 12 wouldn't fit and that metal piece that holds the jack behind the passengers seat kind of restricted to getting only one 10. Hopefully it sounds good, I'll be getting it in 4 days!