What speakers will fit a Oldsmobile Alero 2001?

What speakers will fit a Oldsmobile Alero 2001, or where can I find them? Right now it has Delco model # 09386529. Also, How do you access the old speakers to get them out? Is it a matter of just plugin the new ones in? |||The front speakers are 4x6 and require you to remote the door panel to get access to them. The rear speakers are 6x9 and require you to remove the rear deck to gain access. As far as plugging in the new ones, you'll need to purchase speaker harness to just plug and play. Otherwise you'd have to splice into the factory wiring.