No, I highly doubt it. But if you do get them under there, let me know. I just installed 2 10" Pioneers behind my rear seat in a box facing forward, with the amp under the driver seat, and I barely had enough room for the amp under there. You gotta remember, even with non-power seats, there is a bar(the one you pull up on to slide the seat) that teeters like a see-saw(for lack of better description), so when you pull up on the bar, the ends of it go down. Luckily, my amp barely fit between the 2 parts that move. Take a look under the seat, and see what you think.
One thing I might suggest are these subs that come in a little(about the size of an amp) box, and the are pre-amped, meaning you dont need to wire an amp to them. They are a little more expensive but they use a whole new technology in the subs, making them really thin, unlike mine or normal subs that have a huge madget behind them. They are pretty compact and might fit under the seat.
Hope this helped.