I did the tear down of the 4.11 and then did as much work as possible on the 6 foot Pinion and ring gear set up for 3.55, then brought these 2 large parts (pinion shaft, ring gear on Third member) along with the spider gears etc.. to the machine shop and a guy with 42 years rear end experience doing cars and trucks of all sizes. No one would do the job but this guy said "I look forward to the challenge of an old Chevy, done so many Jeeps". It looks so good I want to put it in my running 3100 which is still 4.11.
