What is the maximum potential of this turbo set up with any necessary equipment to run it efficiently? I'm not talking about a fully built motor. Just the things necessary for the turbos to do their best.
With the 60mm turbos this kit comes with, it is capable of up to 1000rwhp. Out of the box with the wastegate springs 570-600rwhp is typical at around 6psi. Tuning is required regardless, but depending on how high your goal is, the fuel system will have to be upgraded as such to accommodate it.