My X does not have a drive shaft carrier bearing, it's a one-piece slip-yoke drive shaft. Yours should be the same. The only thing on your X that should be referred to as a carrier bearing would be the carrier bearings in the differentials. I could be wrong, that's happened once or twice before, but something doesn't sound right.
Sent from my ass
'03 X, 3" AC lift, 31" BFG MT's, 8,000lb. winch, Rancho 9000 adjustable shocks, IAB