haha!!!
well this guy is def. a smart cookie, and a damn good fabricator, so ya, he upgraded the necessary parts! plus, GM hooked his warranty up! he was out wheelin HARD, and he poked a big ass hole through his front AND rear diffs (different occasions). he took it to the dealer both times, and talked the service manager into upgrading the front diff to iron so he wouldn't have to deal with it again and the rear diff to a 14 bolt, IIRC, both under warranty!!! he also got them to upgrade his stock underbody protection to GM's heavy duty steel units for free too after he cracked the piss out of all his composite ones!! granted all his upgrades weigh in at QUITE a bit, who cares??
i'll try to find some pics here in a little bit!