okay so i was driving the stang today when all a sudden the radio went out and the speedo was jumping around like crazy then i came back on the off and then the car was running extremely rough almost knocking viderating hard as hell. i pulled it over in the home depo in etown to meet the wife at work went to go turn it back on and nothing all electronics work fine but it doesnt even try to start. battery is a red top and is brand new and doesnt need to jumped....any ideas please help....also i have a coolant leak, anyone know where i can get a overflow tank