Use coolant. It has anti-rust so your parts will last longer.
If they were genuine, then they must be NBK D6654H. NBK is quite a big supplier for factory-fitted brake pads in Japan. Their pads are long-life pads and thus provide not-so-good stopping power (try searching 'nbk brake pads' on the net and you'll see thousands of people agreeing) but very long life (more than 70k km for some people) so if you needed to change at 15k then driving habits of users could need changing. What was the brand name of replacement pads? Please don't tell me it was MK Kashiyama.
Have it clear-coated after the paint job. I think Royal Shield is the local name for it.
GT Radial are nice tires and I'd buy them any day. But they don't have a date stamp.
UPDATE: I have been pursuing NBK. NBK is a brand name of Nisshinbo Industries, Inc. which is a big Japanese conglomerate. Their North American presence (more related to automotive) and Japanese presence (showing them as a big holdings co.) This page shows their multiple interests. After much ado, I found the exact website of their braking division in Japan. Phew! They are listed on the Tokyo stock exchange. Additionally, Wikipedia even tells it location.
It is written on their website that they never sell to parts dealers, only to automakers for factory-fitted or stock replacement stuff, it means if you are seeing NBK products at some shop in Plaza then it is definitely fake or some other material has been glued to an NBK genuine back-plate (this has been told to me by a storekeeper at a Suzuki dealership before, but I didn't heed him/her b/c I thought they were just telling me this to encourage me pay their premium). A sister concern to them goes by the name Nisshinbo Automotive Corp. which sells brake products under the name NAC. As per my learning, NAC brand brake pads are not available in Pakistan. (Now I've seen NAC ball bearings and water bodies in the market but I think that NAC is some other company, complex, isn't it?)
(Maybe due to all the premium they earn from selling expensive parts at dealerships only, Nisshinbo has enough dough to dole out on researches etc. They have given a link to ifriction.com which is an online newspaper specifically catering to braking news.)
Anyhow, Nisshinbo should not be confused with similar sounding NISSIN KOGYO CO., LTD. (which manufacture brake parts for Honda). Nissin's North American presence and Japanese presence. It should not also be confused with one hundred unrelated, but similar sounding things. In fact Wikipedia has an entire page dedicated to words sounding like Nisshin.
Especially this document helped which first led me to search for Nisshinbo instead of NBK. Things get somewhat easier when you know to search in the right direction.
I've been able to deduce that NBK brake pads are organic & have less than 10% steel fibre in them. That's the technical reason for longer life, less dust and less rotor wear. That's also the main reason for not-so-good braking of genuine brake pads. Now the semi-metallic (terms like leather, carbon etc. are all local slang) brake pads have 30-60% steel fiber. That's why they have much better braking and slightly greater rotor wear. Now that I know NBK brake pads are organic, they are not at all leathery, are hard to touch (can't penetrate a fingernail into it), light gray in colour and looking very like a ceramic material, it looks like there are other organic materials which are not at all similar to leather. I must look into it! I never knew brake pads could be such a science in themselves.
NOTE: NBK brand name is not also to be confused with JNBK. Judging by the non-professional website design and the number spelling mistakes, I feel JNBK is a brake pad manufacturer who likes to capitalize on NBK's name. Every time you search for NBK, JNBK results are also there. In fact searching for NBK has proved more difficult than for JNBK. Although JNBK is not available in Pakistan, plz 'miltay jultay namon se dhoka na khaye'. Apparently, JNBK Japan has also second-copy counterfeiters to them. To each their own.
