Newbie to Audio has a question

[Purduegmc]

I am working on putting together a small audio system for my truck. I currently have two 6x9 in boxes that sit on the floor in the center of the truck. I have an older JVC headunit. I am looking at adding a subwoofer to the mix. I am looking at a shallow mount 10" pioneer sub to possibly place under the passager side of the seat.

http://www.newegg.com/Product/Produc...82E16882500108

I was wondering what kind of amp you would suggest for this application? Also where would you suggest placing the sub in the truck (bench seat with gas tank still in the cab)? I am open to ideas on other subs that might work better. I also think that I will add an equalizer to it, but not sure where to go on that one. Thanks for the help.