Originally Posted by daggo66
Whether or not you need to re-gear will depend on how it drives after the change. You might get away with 4.1, but it will depend on how it feels to you. You will definitely need the Procal to reprogram your speedometer/odometer. Your speed will be off significantly.
I agree with this
I have the exact same setup as you (4:10 gears, 6-speed, 2" lift and 35" tires) and I am very comfortable with my gearing. Sometime in the future I may re-gear but they are fine for now. I forget how far my speedometer was off (7-8 MPH as I recall) so the ProCal helped greatly.