I might buy 2002 Civic SI near me that already has a turbo and supercharger in it. The dealer showed me it's service records. It's been properly maintained and well taken care of thus far, and also has a clean CarFax report.My only concern is the twincharge setup was put in shortly after the car was first purchased brand new, and now the car isn't far from 85k miles. I've test driven it and it seems fine now, but are it's best miles already behind it?