A year ago, i have my JDM front end installed in a garage, and my stupid brother left the car there overnite in the garage. Now.... I notice the VIN number, the green tag (beside the black LSD wordng) is gone, also beside where the green tag supposed to be, there is the 98B18C6. ya C6. since it is dirty i can't read it is a five or six at the end. Over this one year, the car still pulls as strong as before, since i dont' race the car, so i dont' know how it compares to others. everything seems fine, fuel economy is about the same. Is there any way to tell the engine is actually the original. I have searched on the web for some time and i did see R without the green tag. My car is a 98 CW ITR in Canada. There is also a white paper thing on the side of the engine!! Any help or pics would be appreciated!