I would paint that car apart, that avoids the "tape lines in the jambs etc. I know its silver, but just position the doors, fenders etc as they would sit on the car. Then just be accurate in your gun and air pressure settings. Same number of coats etc. I have done this countless times and the cars have all matched, and look great. HOWEVER.... i have recommended this procedure to some people and for some reason they have had color match issues... MAYBE im just lucky?? it hasnt bit me yet. I love doing the main shell first, then hanging the parts on it as i paint them... WhaTEVER YOU ARE MOST comfortable with is what you should do. Looks great so far