[thatdavidkid]

road noise and vibration shouldn't appear with a gear swap... a good bet on the vibration is they dropped the driveshaft.... is the vibration speed dependant? or does it occur with rpms? if the driveshaft is bent, make whoever did the gears pay for it... road noise, i dont know... maybe they toasted your tires after the install???? another idea.... maybe you're just more observant since you had work done (sounds odd but your senses may be hightened since you are maybe looking for problems since it was in a shop... we get that a lot, people at my work do that.. get the car back and notice "new " noises that were always there)