rear end
i wouldnt worry about the axels they are more then sufficient, the housing is what i would be worried about, according to the chassis shops if you are making more then 700 horsepower you should step up to a molly fab rearend, i know there are alot of people running stock housings and getting away with it but if it was me i would step up to a molly one so i can sleep at night, also if you do stay with the stock housing i would make sure you have a back brace on it,, good luck...