Well, you are right with thinking about the "Point of view" differences between people. After all, what is streetable varies widely. But not this time.
The front steering linkage can be seen a little bit. 3 tubes run under that centerlink and the tie rods, which are even lower. You can see one...kind of. That tube is the highest tube. The other 2 are lower. This effective puts the tubes at about 3 - 4 inchs (Give and take here) from the floor. While it is enuff for the car in jounce, speed bumps will for certainly hit it.
Welcome aboard rookie. Headers suck no matter what. Dougs have a mixed review on installlation and tti's fare a little better if not boardering on easy by some. Again, they all suck.