Front Differential

I AM LOOKING FOR ANY ASSISTANCE IN REPLACING MY FRONT DIFF. I HAVE NOT TAKEN THE TRANNY OUT YET SO I DONT KNOW IF IT THE RING, PINION, OR SPIDER GEARS OR ALL OF THE ABOVE. BUT FROM THE LOUD CLUNKING NOISE AND THE ENGINE TRYING TO JUMP OUT OF THE ENGINE BAY I AM SURE IT IS IN THE DIFF SOMEWHERE. I NEED EXPLODE VIEWS OF THE TRANNY IF ANYONE HAS THEM. DOES ANY ONE KNOW IF THE TRANNY NEEDS TO BE DISSASEMBLED TO REPLACE THE PINION? IF SO HAS ANYONE REBUILT THEIR OWN TRANNY? TIME FRAME? PAIN IN THE A** FACTOR? CAN THE PINION BE REMOVED WITHOUT EXTENSIVE TEARDOWN? ANY HELP WOULD BE GREATLY APRECIATED, I HAVE ONLY OWNED THE CAR FOR TWO MONTHS....