2 questions

[madmikeismad]

How are these prices for head work?

Chevrolet Vortec Bow-Tie Cast Iron Cylinder Heads



And my brake pedal has been really hard lately. But if I push it and let off, it softens right up and works normal. What causes this? Or is it normal?

 

[pinky49]

seems pretty good, i paid more for my 4b head
ed