hi, im looking for a 12 bolt rear end complete to fit a 87 camaro iroc, willing to sell my complete rear end from Australia 373 set up i believe its a 10 bolt, im dropping in a ls3 396 motor and ive been told to upgrade my rear end as well as my tranny which is auto, any and all information on wat i should do, ne ideas would be very helpful. i live in ontario canada but if ur close to ne of the boarders id be willing to meet thx for all ur help.