[Leveled2012]

I have a 14 Bolt FF that I want to put 4.10's on, but there is regular gears and thick cut gears, what do I buy? Rear end is off a 2008 2500 GMC Sierra, will be used for street 90% of the time with some light 4 wheeling. Will most likely have some kind of LSD in it also.

 

[Leveled2012]

Also it currently has 3.73's

 

[6.2AllTerrain]

What does the diff cover look like? https://www.yukongear.com/diffwizard.aspx

 

[wildchevy]

1 minute search on goggle thick cut gear sets fit 4:10 and lower carriers