97 Clio Questions

HI, I'VE JUST BOUGHT A 1997 5 DR CLIO 1.2 PANACHE. I'M WONDERING IF IT WILL BE WIRED FOR 4 SPEAKERS? IT APPEARS TO JUST HAVE 2 IN THE DASH, NONE IN THE BACK. WHEN I FITTED MY HEADUNIT THERE WERE 4 LOTS OF SPEAKER WIRES. WHERE WILL I FIND THEM AT REAR OF CAR? ALSO WHAT SIZE ARE THE FRONT SPEAKERS AS I'D LIKE TO UPGRADE THEM. ANY HELP GREATLY RECEIVED :confused: