It is my opinion that if the engine is upgraded then the suspension and brakes should be done as well. I guess the overkill factor could be gauged when compared to the power output of the engine.

Now, with that said, I feel the 944NA (non-turbo) brakes are more than sufficent and that the (early) 944T are more than enough.

The larger 993/996 brakes would need a very high output motor to justify their need.