hi. i have had my crossfire for over a year. its a auto 2004 model with 60.000 miles on the clock full dealer service history. since i have had the car i have thought that the burble from the back end between 30mph-60mph was from the exhaust. but i have seen a few threads saying they have diff whine problems. i can seem to control this burble with throttle blips . this is driving normally. ! when i accelerate hard the noise is not there . the exhaust changes to more of a growl ! .. so is it exhaust or diff noise. as there a not a lot of these cars around our area i dont have anyone to compare with .. help please. also has the crossfire a lsd..