If you have not already noticed, that np205 case is a heavy SOB. I droppped mine durring an install and was lucky I didnt crush my head. Best of all nothing broke except the concrete it hit. I recomend a good floor jack and a second set of hands to help pull it and install it. If you gotta use GM for parts, pack your wallet with extra cash. These guys were able to find me parts for the 205,
http://www.4wheelparts.com
Good Luck