Locked front diff.
Would I be right in thinking that this gives less steering into the corner allowing you to brake harder and later, but it gives more steering and allows the car to accelerate harder when on power?
Presumably the major trade offf is that it scrubs speed through the corner when you are off power so may suffer round long slow corners.
On the basis that getting on the power early makes up far more time than getting on the brakes late it has got to be worth trying this.