I have extracted and ported Google Pixel Dialer and Contact apps from Android "N" System Image for MarshMallow 6.0.1 rooted phones. Very thanks to my brother @spuri78 for sharing the "N" system image. Maximum of all system apps working in MM but i don't notice any big difference than the current Google apps.. So here u go... This mod tested only in MM.
A big thanks to @exit_9.1 for testing and sharing screenshots..
Google Pixel Dialer and Contact App :- Click Me !
- Download the zip
- Copy To Phone
- Flash Zip
- Set Google Dialer as Default from Settings/App/Default