Help choosing rear end parts

[mongocanfly]

Gotcha...yeah higher means lower...haha....higher numerical = lower ratio....

Matt's covered it pretty good...building a diff isnt for the faint of heart...
can be very frustrating and requires some specialized tools as well
You'll need dial indicators, calipers, torque wrenches...both ft/lbs and in/lb...
A dial in/lbs torque wrench to check rotational torque..
A good press, bearing separators , setup bearings.. a case spreader is nice to have
And a lot of time and patience...

I agree with the tru-trac...but I like Yukon gears and kits...