By temp sensor I was talking about this one
http://www.kudosmotorsports.com/catalog/nissan-water-temperature-sensor-ecu-genuine-nissan-skyline-r32-all-r33-all-r34-all-p-333.html
Tho we could be talking te different things this one not the radiator,
As for the O2 sensor maybe excuse toget a front pipe Haha but abit pricey maybe,
That's what I would do I bought strut brace no real difference, but then bought sways bars and was happy