so my alero's exhaust has a hole in it or something and its now nicknamed the purring walress... anyways... how much does a new exhaust system cost? just a regular old stock exhaust
subs - Orion CO104S ($50each) - http://www.sonicelectronix.com/item_18936_Orion+CO104S+-2009+Model-.html
amp - Orion CO8001 ($129) - http://www.sonicelectronix.com/item_18885_Orion+Cobalt+CO8001+-CO800.1-.html
my friends got this in his truck under the seat and it sounds nice if u only want a little bass. and its pretty cheap.
i have a 2001 alero... my trunk is 2 seperate pieces, the main trunk, and the little plastic piece that i dont even know y its on there. that piece of crap rattles soooooo much. i finally took some 3.5" long screws and screwed it in so no more rattle