I do it all the time. I’ve been building iron headed high compression pump gas engines for YEARS. And aluminum heads don’t make a pinch of **** difference to detonation resistance or what compression ratio you can use. NONE.
Want MORE proof? Go watch the “Engine Masters” episode where they test it.
And then pay very close attention to the absolute ABUSE they did to the iron headed combination to make it fail.
Again, if you build and treat your equipment the way EM did that you have no business being anywhere near an ICE.
In fact, try fishing. Or golf. That’s more your speed.