once you get the head unit out and put the new one in, you can take the radio out in 30 sec with the "keys" that come with the radio. You will need to take it back out after you get ready to put the subs in because you need to run the rca wires and the amp info wire (blue wire that tells the amp tcome on when the keys in the ignition, wich is wired in to the radio harness.)

BTW you do have the dash harness and instal/trim kit right?