So I have a leaking front differential seal on my truck. I have an '03 v-6 CCLB 4x4. The door sticker says I have a CA46 axle which according to the sticky up above means I have a c200 rear end. I usually buy my stuff at Autozone, but they say on their website that part #223542 fits my truck, but its for an R200a axle. RockAuto has a Timken 710245 that it says fits a C200b and H233bs axle. So which is it?