Heads selection help 5.9 magnum

I was bummed out from the news on EQ. Since the Covid shut down getting parts now and in the future could be challenging. Someone said speed master had a set of heads but I only found LA heads. I called them and I am waiting for a response if they have magnum heads. I just feel indifferent about running cracked heads. Though it might be the best option?
So got off the phone with EQ. They sell a ch318a but it is not the new Zeeland head. The new ch318a has 165 and the old 175 runners. So it’s marketed as an OEM replacement that’s more heavy duty then the originals. Lower performance it seems.