You guys are right! They threaded right into the seat belt bolt in spot. Fail on my part.
That's really good news for me though, finding an open spot for the anti-sub belts is pretty easy as the floor pan is flat through the middle, it was the hip belts I was struggling to get properly mounted. I have backing plates for everything so I should be good I believe.
I'll post up pictures so you guys can make sure I'm not doing anything wrong. This isn't for any particular class, I'm just doing an HPDE coming up and autoX's as I find them (it's in my civic) It only had a questionable 4-point harness before. I put in a passenger seat and 6 point harness driver/passenger for my coming up HPDE's.