Default [Q] Or request (simple)

Hi, aomm well i install Virginity Rom v6 & it's a great Rom now the problem is it have installed xperia's keyboard (i hate it xperia's are slow in my experience with them) so i want to have the s4's keyboard can anyone help with this please? aomm i tried to push the apk with correct permissions but the app goes FC then i don't know how to solve it, can anyone help me.