which is the best 3 headers for the prelude??

 

As a former prelude owner I can tell you it's not going to be cheap to get a good header for the car. The top 3 are probably SMSP, Mugen and Hy-Tech. You may want to check out honda-tech for further research. SMSP has sold a few headers there (and is a regular poster on the board) so he could answer any questions you have about headers. BTW all of the above headers will run you about 1G.

Gabe