Just because a top fuel or NASCAR team uses something, doesn't mean it is the best for all applications. Those engines get torn down and rebuilt after every run or every race. The only durability they really care about is getting through the current event. I think using some of these exotic materials in an airplane engine your life depends on is a fool's errand unless you are intimately familiar with the material properties. I don't think asking for opinions on a forum dedicated to 50 year old cars is the way to gain that knowledge. Current engines are using forged steel for a reason. You want to save a pound or two off the airplane, eat less and walk a couple miles each morning.
