I have a chance to buy 2 kenwood 12 in subs and one of those black plastic competiton boxes from my buddie for 100$ The box fits under my back seat. The only thing is his amp blew up so there isnt one and I have no idea what kind of amp I need for these. Also my trucks a 94 is there any way I can keep the stock radio and run subs? And does the box and 2 subs sound like a good deal?