OEM FORD 8.8 carrier 28 spline

You would come out saving money if you just rebuit your traction lok rather than buying that one. The rebuild kits are only around $50. If you've never rebuilt a rearend before you might not want to try it. It can become a little tricky when you're changing gears. You should shim it so that the contact pattern is correct. Since your not familiar with doin gears I'd suggest having someone else do them for you.

Yes it will, but why are you replacing your carrier?

Like the good man said, tracloc rebuild is an easy afternoon project and gear install is a tough tough undertaking. Why do that unless you need to?