I have an Acura 3.2L VTEC motor (out of a S-Type) in my sand rail. I'm looking for headers, but the only ones I can find are for the 4 cylinder VTEC's. Anybody know of a vendor that sells headers for the 3.2L?

Try Comptech, OBX, or Stone Racing. Quality varies from brand to brand but they all put out the same power. There are dyno graphs on www.acura-cl.com that document gains of 20-25 wheel hp from headers. Cold Air intake (Injen, AEM, Comptech) usu adds ~ 10 whp.