When I bought my S14 back in 2016, it came with R33 GTST front calipers and has had the same pads installed since then. I've been damn impressed by them and they still have a heck of a lot of material on them even after another 6k miles I've put on them, I'd like to know what they are as I would really consider them in the future. Took the pads out, but there's nothing blatantly obvious to idenitify them, maybe somewhat of a logo that someone recognises.
20180609_150734
20180609_183952
The photo isn't blurry, it's just the text and logo on the pads isn't sharp. I'm seeing an "A" with half a union jack and then the word solid with some random logo of a traingle inside a triangle. Maybe someone knows instantly what company made them! Worth asking.