General :: Restore 4.3 Dialer To Kitkat?

I prefer the 4.3 dialer to the new 4.4 dialer in kitkat. I tried removing google dialer and replacing it with a copy of 4.3's dialer from my nandroid. It sort of worked. The dialer launches and works as you'd expect. However as soon as you press send to make a call, the dialer screen disappears. The call is placed successfully but you can't end it, see the keypad, or speaker options. The in call screen basically disappears. You can still get to call history but none of the call screen options are visible.