They're from a 91 twin turbo. The rotors need to be turned, so I'll sell you everything (front rotors, calipers, lines) for $250. This is a really popular conversion. The rotors and calipers usually go for $550-600 used. It is recommended to use SS lines from PDR Racing because the 240 brake lines don't mate properly to the 300ZX calipers. I'll throw in the stock Z brake lines if you want them. Let me know if you're interested.