time for a new rear end

[factory2wdblazer's]

well over this week end i was on the way to the lake and had some major issue's.... was driving down the road doing about 45 mph when i heard a big bang, sounded like the a- frame hit a pot hole on the free way doing about 110mph, i mean the noise this thing made shocked me, i pulled over and noticed that the truck would no longer move..... so i had it towed home and took the rear end cover off and this is what i found..........[IMG][/IMG].
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.do i need the same rear end off the same kind of blazer or are there better rear end's i can find out there that are inter-changeable with my blazer.....