I am selling a set of front and rear GBR 4:11 gears. Going to stock, as the 4:11s don't play well with the NV4500 behind my Gen III 6.0. Rear is almost brand new (less than 1,000 miles) front has more miles but I have not abused the truck since the front was installed and the truck's been sitting for the past 2 year while I work out swapping the 4l60e for a 5 speed NV4500. New it looks like these are now $700 for the set. Not sure what the market rate is...if anyone wants to clue me in?