A few months ago we talked about turbo engine modifications. After some thought, I’ve realized that a lot of people are modifying their 911 and 911 Turbo engines and are starting off with what I consider to be a shaky foundation. So, for all of you following my columns, let’s back up a little and talk about building an engine that goes beyond making gobs of power. Let’s build one that stays together. Let’s build one with a “Bullet proof bottom end.”