Which version of the firmware can adapt to PHICOMM K2 or PHICOMM K2P？?

[aokawange]

I have a PHICOMM K2 and a PHICOMM K2P router. The currently installed system is PandoraBox (based on OpenWrt 14).
Because the current firmware is very poor in QOS performance, I want to update to the gargoyle firmware, but I have not found the gargoyle firmware specifically adapted for these two routes.
So, which version of the firmware is compatible with these two routers? I found a lot of firmware based on MT7620.
The configuration of these two routes is as follows:
K2 (MT7620A, 8M, 64M), K2P (MT7621AT, 16M, 128M)
These two routes are widely distributed in China, including PHICOMM K3, K2P and K2.
I don't know if the development team will consider adapting these routers in the future.

Thank you.

[Lantis]

You can build a custom firmware based on Gargoyle 1.11.x for these routers.