I just recently bought a 03 cobra and when i got it the guy i got it from said the rear end whines from the way the gears are cut so i am going to replace them because it is pretty loud and i dont know if it is just that when he did the solid rear swap that he messed them up or what. another thing is when im going about 80 when i let out the car shakes but if i put my foot in it the car rides smooth? does anyone have the same problem or have had that problem and got it fixed? any input would be helpful:shrug: