that red X looks familar
these cars change hands and parts get swapped, you didn't say how long ago this was but the vin number will be a better indicator of his car than a hood that might well have been replaced or traded off, many of us 240z guys know our vins as they tell us when our cars were made and let us know which parts we need, mine for instance is HLS30-11176, meanign my car was number 11176 produced, meaning I have a series 1 car with many unique parts, I knwo the guy that has HLS30-00076, and it's got a few more odd ball parts
here si the registry in the event that someone actually bothered to register it
http://www.zhome.com/IZCC/ZRegisters/classic.htm