With a bunch of power, an LSD, and slicks (assuming you'll be running them what with this being a drag car and all) you do stand a chance of breaking some axles. If for nothing more than piece of mind, you can get beefed up axles from driveshaftshop.com. Also if this is primarily a drag car I'd go with a clutch type LSD like a Kaaz or something. You could go with a Quaife or other sort of torque-biasing diff (the stock ITR diff for example) which would be not quite as good for launching but better from a handling standpoint.