I just had a set of FRPP 4.10 gears installed last week. The mechanic told me I may hear a little noise after the install but I've also read quite a few threads about people whose gears are nice and quiet. I've been hearing three distinct noises. First is the faint "whine" I would assume is coming from the gears. Kind of a low-pitch buzzing. Not really too concerned about that but the other two noises I'm getting are a little more bizarre. The second sound is a higher pitched whine when I make a high speed right turn. Say, above 50 mph. And the tighter the turn the more distinct the sound and only when turning right. I'm thinking it could be a clutch in the differential. And finally there's a deep vibration that feels alot like an unbalanced driveshaft to me when I hit about 70 or 80 mph. Haven't taken the car faster than that yet. Kinda scared to. I'm gonna take the car back to the mechanic and take him for a ride and see what he says. But I'm wondering if anybody here have had similar problems with their gear swaps.