Just a few things to consider. First, this is not your "typical" setup. True, most tie rods pass through the normal hairpin arrangement. Since this car has the torsion bar system, the front of the frame sits much lower, particularly since the ends of the torsion arms attach to the center of the axle rather than on top as with most transverse springs. And it should be noted that the article made it a point to say the hairpins were custom fabricated for this particular car, so you can't compare their configuration to a ready made set such as from Pete & Jakes. If you look closely you'll see that the tie rods barely pass under the frame rails, perhaps an inch or so of clearance. It would be physically impossible to pass through the hairpins. That being said, the relationship to consider is where they are in comparison to the axle itself, and in that they look to be fairly normal.

With the frame that much lower, the oil pan and the balance of the drive train could be a problem. The pictures don't give us a clue, but since this guy has a long history of building cars, I'd guess he's mounted the drive train higher in the chassis to compensate.