Old Garage Door Safety Sensor Replacement?

I have an old garage door opener on which I'd like to replace the safety sensors. There's nothing wrong with them it's just that I'd like to install the sensors that clip on the rails instead of mount to the wall. My kids are constantly kicking or running into the existing brackets with their bikes, etc.

I called a local garage door company and they told me that my opener is too old to replace the sensors on and I would be better off replacing the entire opener. I hate replacing things that aren't broken and I've looked on amazon and ebay and I see tons of sensors I just don't know how to determine which ones would work with my opener.

If you look at the picture, it looks like it's a Stanley GT200 opener with a date code of 95184. Interestingly, as I photographed the existing sensors I noticed that they aren't both the same ones. Not sure if they came that way or if the previous owner installed a different one, whatever the case, they work fine, I'd just like to install the ones that clip to the rails. Any ideas if this is possible to do? Thanks!