It may not be helpful, but a friend has those exact ones installed in a Yota 91 pick-up 4x4 and he likes them and they've been working for a couple of years.
I can tell you that I have the ones from seatbeltplanet.com in a Yota 92 pick-up 4x4 and have been working great for a year or so.
I have a 90 camry and THINK they would work in it. Below is a diagram from seatbelt planet, go check the anchor points in the camry and if it like the diagram then it should work fine. If you go to the site, you can enlarge the image for a bigger clear view of the diagram. Also, look at the different anchoring systems they sell so you get one that will work in the camry. The pick-ups don't need it.
Hope it helps you out.