Most B series VTEC engine parts are interchangable. I do believe that a supercharger for the 6G Si will work on either JDM 1st or JDM 2nd Gen B16s. There is a horsepower difference between the JDM 1st gen B16 and the JDM 2nd Gen B16. JDM First gen B16 (sometimes called SiR I) made 160 crank horsepower...unless you got one off of an automatic integra XSi/RSi..then it makes 150-155hp. The JDM 2nd Gen B16 (sometimes called SiR II) had 170 crank horsepower. hope that helped
