I'M ISO: 2007 GMC Canyon Looking for used or Refurbished REAR DIFFERENTIAL AND AXLES

MY NAME IS KATIE AND I LIVE IN PIGEON FORGE TENNESSEE I HAVE A 2007GMC CANYON 4CYLINDER REGULAR CAB TRUCK AND I HAVE A HUGE BLOWN HOLE IN MY REAR DIFFERENTIAL I AM SEARCHING FOR A USED OR REFURBISHED WHOLE REAR AXLE ASSEMBLY (REAR DIFFERENTIAL AND AXLES) IVE BEEN TOLD THAT MY 2007 GMC CANYON 4 CYLINDER 2.9 2WD AUTOMATIC REGULAR CAB TRUCK CAN USE PARTS FROM A CHEVY COLORADO AND A ISUZU. SO DOES ANYONE HAVE ONE FROM A WRECKED VEHICLE OR ONE FOR SALE FOR AROUND 300.00$ TO 400.00$???????? I HAVE NO CLUE WHERE TO START AND IF I CAN EVEN USE PARTS FROM A COLORADO OR A ISUZU .