seat belt Harnesses and kids seats

Googled RADIAN Car Seats- Pricey but look very cool (and more importantly: safe) but it says they have a "SuperLatch" system that installs without car seat belt up to 80 lbs?

Dont you need the lower anchor bars that are factory attached on newer cars behind seats? It appears as though their technology wont work with a 1960's car unless you modify (ie weld an attachment bar). Attached pic of their Superlatch.

Interested- but question easy install. Feedback appreciated.



latch_image.jpg