[gringo loco]

:dance:hi, if you have a 2 door jk then the 3.21 is fine however if you have a 4 door then i would go with the 3.73. the auto is also ok, the 6 speed is a pain
in the city. 3 of my jeeps were stick and last 3 auto..have fun every day:wavey::wavey:

I have a 4 door and limited funds, this is getting pricey I am scrounging just to get wheels and tires. Will 3.21 do harm or just be more sluggish. I wish I was rich I'd have a rubi with the pentastar or maybe a hemi

 

[gringo loco]

Yep works fine on my 2012 after i used the procal.

Does the procal do anything to factory warranty ?