I don't think you understand the size of this undertaking. Depending on what equipment you have, you may need to replace/add:
- Front Camera Unit (necessary for LED High Beam Assist Control)
- Front combination lamp
- Swivel actuator
- Headlamp aiming motor
- Front height sensor
- LED headlamp control module
- Rear height sensor
I'm not currently sure if you would need a new BCM, or if your existing BCM can be re-programmed. Either way, there are definitely sensor initialization processes that must be run, so, at a minimum, you'd need access to a Nissan CONSULT-III subscription and suitable VCI.
As you can see, the BCM directly actuates the halogen headlight system:
But on the LED headlight system, there is a separate headlight control module that listens to the CAN bus.
This would be an interesting conversion, but I'm not aware of anyone who has actually done it. The cost for these parts would run many thousands of dollars, and I simply don't think it's worthwhile.... But if you do decide to go down that path, please post pictures and notes of your progress. I'd be interested to see how you make out.