Gm mas vs. 2g mas

I have 2g mas with 2 out 4 honeycomb sections removed. I know the gm mas flows better. Will the 2g mas be fine up to 500whp. I was under the impression it will not work and need gm mas. I use dsmlink too. I am trying to make my decision based on the best set up and easier to tune with? Any response is appreciated.