Yeah, I'm getting the 4.10s installed today. My Mechanic gave me a price quote of $350.00. Man i must tell you I'm excited.
It depends where you get it done. I had mine installed for 225 I think... But yeah man, you WILL LOVE 4.10's! I just installed the DM SpeedCal today and wow... its nice.
Damn, that is a great price. My gears cost me $900.00. But that was gears, clutches, spider gears, bearings and labor.