I was thinking to buy two Sony Xplod XS-GTX100LW 10" Car Subwoofer: Auto Electronics : Walmart.com. I know they are not the nicest subs but im just in high school and am not going all out on a car audio system. First off i drive a 2001 oldmsobile alero gls with 6 speaker monsoon system. I want to know if theres a way to hook up these sony subs to the factory amp. and if so how. I know it won't be to much bass or way loud but i just want some decent sound in the back while i save up some money to buy an aftermarket deck and amp. Any input or help would be appreciated!