Disc brake conversion question

[G Force]

When upgrading from 11" front drums( power brakes)  To front power front disc brakes,  is it Necessay to change the Distribution block (prop valve) for proper brake operations?

[71charger_fan]

http://www.dodgecharger.com/forum/index.php/topic,28576.0.html

http://www.dodgecharger.com/forum/index.php/topic,18354.0.html

http://www.dodgecharger.com/forum/index.php/topic,29897.0.html

http://www.dodgecharger.com/forum/index.php/topic,32197.0.html