There is the chassis name. If your Prelude has not had any sort of an engine swap, then it should be H23A1. Typically, people who race on the streets of Japan refer to cars by their chassis name, rather than Prelude or S2000 or Civic, etc. That's because it gets straight to the car. If you just say Prelude, people will have to ask an additional question: "What year?" because there are five generations of Preludes to consider, each generation having a slightly different chassis name.But don't go out and say "I own a Honda H23A1." It's just too many syllables for America.