Third time was the charm. I finally tackled tearing the master cylinder back off and switching brake rod style. I was experiencing residual pressure in the brake lines. It turns out you can't use a 7/8 Wilwood master pushrod with a 1". Why is honestly still beyond me... I was able to put about 50 miles on the car between last night and this morning. Damn it's hot, I need to charge the AC. The brake pedal is a HUGE improvement. It's the high and hard brake pedal I've been chasing since day one. During normal street driving it's very confidence inspiring. I tried to simulate race conditions and there is still knockback but not enough to require pumping the brakes. In fact, the knockback doesn't take me as far as the 7/8 pedal travel was normally. Clearly I need to get this car on the race track but I'm a happy dude!
This was the first real drive with the new BFG KDW's. I'd say they are noisier than the R888's. The feel of the car is slightly different but nothing I can't tune out. I was able to punch it in 2nd gear at the lake and it hooked. That's a good sign.