Wiped my Rear end

Hi folks,
After a spirited launch at a red light, opposite a Toyota celica with an 8" 
round exhaust and 65 subwoofers, my rear end decided that it wanted to breakup 
into little pieces and rollaround inside the housing.  Damage is severe.... 
broken teeth, metal everywhere!!  Don't the halfshafts break before the diff ?? 
 I was hoping that but......     
Anyone in the Boston area have a diff or whole rear end ??? 

Thanks,
Mike