Any Marshmallow ROM on locked bootloader?

Hi guys, I have a C6502 but unfortunately with locked bootloader (Bootloader Unlockable: No in *#*#7378423#*#*)

Is there any way to put Marshmallow 6.0.1 ROM on locked bootloader Xperia ZL?

If its not possible could anyone recommend what is currently the most stable/least bugs daily driver ROM for locked bootloader Xperia ZL?

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