Hi, my parents are getting me my first car and I believe they are aiming toward getting me the Nissan Sentra 1.8S. I really want the V-Spec but its out of their budget. I'm not very knowledgable about cars but I was wondering a few things about this car. First off its going to be an automatic because my parents don't want me to have a manual. Can you go from an automatic transmission to a manual transmission? Can I upgrade from a 1.8L engine to a 2.5L engine or is the car pretty much the way it is once its on the lot? Also whats a good website or place to get body kits and nice hop ups for this car? I know I am a newbie so don't dog me out too much....educate me if you can.