Trick Flow SBM Heads

I don't have any intention of replacing my stock x heads with an aftermarket aluminum head unless I had to tear down my motor. My motor has just a few hundred miles on it so knock on wood I hope it lasts for awhile. My question was just a random one out of curiosity.

Years ago I had a Mustang II with a 302 and no factory head could compare in comparison to a good aftermarket aluminum head.