Thats good that they fit, i could only find g-corporation and bride ones for the s15, and they werent cheap. Is that £16 from nissan or ebay? if it's ebay do you have a link, to save trawling the endless **** on the bay.
I have some that actually say Silvia on them. They are the ugliest mats I've ever come across, so thick. They look like they're from a completely different era. Might have to go look around and see what options I've got as I reckon it'll make a huge difference to the interior. *inspired*