Lollipop 5.1.x with ART default runtime

Hi All,
I'm looking for a rom that has as ART and not Dalvik runtime, or both with the possibility to switch them.
I tried to CM12.1 JustArchi but only Dalvik and does not want to implement ART.

Does anybody know if there is one? If possibile without many changes as themes, overclock, downvoltage, preinstalled apps ... etc ...

For verify if your rom using art or dalvik install this: https://play.google.com/store/apps/d...boy.artchecker