As far as I can tell, stopping and keeping your trans intact will be your biggest challenge.

There is little to no aftermarket when it comes to brakes, it seems guys go custom or dual pot Mitsu brakes modded to fit.

And I have no clue how long your trans will last at that power level, these trucks came with sub-150hp. You are asking three times what its supposed to hold. I know some guys use the 2wd KM132 trans with their turbo swap, but problems "seems" to arise around the 300hp? LSRmike would be the guy to inquire about power limits on stock parts I believe.