Nexus 7 2013 Kernel/Install

Hi

Have been trying to get the Nexus 7 2013 working but having trouble with the Kernel - logs indicate no modules to be included when running from TWRP - the rest works (App,chroot etc) but anything specific like wifi adapters don't appear to work.(incorrect fw levels shown in dmesg for instance)

Device : Nexus 7 2013 (flo) WIFI
Android 6.0.1 (marshmallow)
Nethunter: nethunter-generic-armhf-kalifs-full-rolling-2019.03-13-0514.zip
Kernel: kernel-nethunter-flo-marshmallow-2019.03-13-0514.zip

Unlocked bootloader, got root, applied Nethunter then the Kernel using TWRP. But the message in TWRP remains that there is nothing to be done, it doesn't error but appears as if it isn't for this device/version.

Also noted in the last few days there appears to be a different way of installing using Magisk and the link to nightly build has moved - is there a better/correct way for me to get Nethunter working on my Nexus 7 2013?

Any thoughts very much appreciated