Speakers in the back of a 01 polo

Hey iv got what i think is called a mk3 facelift polo, well its a 51' reg so 2001. It currently has the stock audio setup which leaves a little to be desired hehe. I would like to fit speakers in the rear door cards (its a 5 door) and was wondering if that mk of polo had the option of read door cards with speakers in, eg if i could buy new door cards ready to put speakers in rather than butchering up the old one. thanks