Dynamic Compression and Aluminum Heads?

You should probably just ignore the whole concept of dynamic compression since it often causes more problems than it solves. Trying to run a high compression engine on lower octane fuel is a time bomb. A low dynamic compression ratio just means that at low speeds the effective compression ratio is lower because not very much air got trapped in they cylinder. This is a useless fact unless you are going to limit your engine speed to less than 2000 rpm. As soon as the engine comes up on the cam you have dynamic filling of the cylinder and full compression. So what exactly is the point of even thinking about the dynamic compression ratio? It is a useless concept. If you are going to run the engine then you need to pick a fuel that matches the static compression ratio. If you are just going to run the engine at part throttle then why do you care about performance parts such as aluminum heads?