Is there a reason an aluminum head can’t be cast to resemble the OE heads on the ends? Many don't the block end of the aluminum heads on certain cars due to alternator clearance and looks. Flat. I have three engines with aluminum heads and for those cars they look right and an iron head won't do. I would just like to see at least a little contour on the ends instead of flatness for a sleeper build.
Even when aluminum heads are painted engine color they stick out like a sore thumb if the goal is to have a stock appearing engine. I believe there was a MP head in the 90's or early 00's that weren't flat on the ends.