MM indicated that they left the stock Fox Mustang anti-dive in their K-member. I assume they designed the K primarily to be used with their T/A. But as Frank pointed out, I found more rear traction with the T/A which added some under-steer; not anything noticeable with brake torque bias. But then I was moving from a rod-ended PM3L. The switch to the PM3L was the dramatic change from a suspension/traction point of view.
I've also found that the torque bias calculators help compare one combo to another and can indicate whether you're close or way off. If way off, the prop valve doesn't have enough adjustment. I generally look at the factory torque bias set-up for a given OEM car and then go from there. You need the caliper and rotor specs. Pad compound, pedal ratio, M/C size, etc, can be help constant for comparison purposes.
So for comparative purposes, given a Cobra PBR with 38mm twin pistons and 13" rotor up front, and an SVO 54mm single piston caliper and 11.25" (?) rotor out back, the brake torque bias is 55% to the front.