sundown audio. re audio.

I have a 09 silverado single cab, wondering if sundown audio subs would fit behind my seat and if they would get the proper air needed in a box with limited space?

I have multiple items I am welling to trade. I will bundle some of them if need be to make a deal happen. JL Audio xd600/1 Amp Retails at $450-@ 4 Ω 400 W RMS x 1, @ 3 Ω 500 W RMS x 1, @ 2 Ω 600W RMS x 1 Amp Works perfectly. (2) Boston Acoustic GT-20 Amps retails at $250- GT-20 2 channels...