Hi, hello to every one , i have my first mcs is a jcw r53 '03, i'm very happy with it, but i have my first dubt the serial number of the jcw kit is s3105 it has all the bages on the rigth places but anyone knows how to be certain that it have the complete kit, i'm sure about the exhaust , but i not so sure about the supercharger or the head , does this parts have anithing that identifide it? i'll be very gratefull if anyone can help me, thanks.