K frame lowering blocks
Well, as I said, I actually have used spacers. Not for a Slant Six, but I'm not a snob...I've been a Mopar guy long enough to recognize that the lowliest Valiant with the smallest Slant is every bit as righteous as the fabled Hemi Cuda.
You see, a supercharged engine might tolerate a hat far better than a naturally aspirated engine. After all, you are forcing air, not sucking it.
I'm very well aware of those old cars. The intake will hit the shock tower? No way. And even if it did...well, that's why it's called hot rodding. Maybe he swapped one problem for another. That's exactly what hot rodding is.
Stuff sticking out of hoods is acceptable when you have no other choice. Otherwise, it stops being cool the day you turn 20 years old. Holes are easy. Making it fit under the hood is for grown-ups.