center bering for drive shaft good or bad?

[mirage83]

With that much movement your carrier bearing is shot. Now, whether or not you want to go to the trouble of replacing it is something I can't answer. I've never done it so I can't tell you how difficult that may be, but the one you're describing is definately questionable for an endurance race.

I believe I've seen them available from Autozone, fairly cheaply even.