Okay, so, driving a stock 99 Explorer XLT, 4X4, SOHC Vin E, and I am going to replace the hubs. I've been checking the prices for the Timken Hubs, part number SP450200. RockAuto price is $104 each. Autozone price is $212 each for the same hub. Am I missing something here or is it just Autozone...