do you need the guns with the bottle over the nozzle? The one i have has the paint bottle below. I am about to paint my car and have a few questions. This is my first time. i just bought some primer, and he said they have the kind that is porous and the kind that has a moother finish? i bought the first kind, do i need to put on the "finisher" type primer before i paint? Next, how many coats of primer should i use, and how long should i wait between coats? i bought it at napa. Then what grit should i use to sand it before the base coat? i am going to paint it black, do you think a gallon of paint and the reducer that you mix it with will be enough for the car? Next, after the base, do i need to sand it, and what grit? How many coats of base and how long should i wait between coats? same for the clear? i would really appreciate any help you could give me, because ive never painted a car before.