Travis, I can't help you with the antenna. But I can tell you about the Battery situation. I have had a Champion from Sams club in my car 1000CCA , but it's maby and over kill. A good brand of your choise and comfort 850 cca would be very good. If your battery is good now, no matter what the CCA, the alternator may be your problem. Even a 650 or 550 would crank the car, but just not as long. Look at my web site if you may want to consider an alternator. John hervey http://www.specialtauto.com/electrical.shtml