I have a 99 F250 Super duty.4x4 4 wheel abs. Not dually. I just found out today the Wheel bearing hubs are bad. Now I did some research and found that my truck was manufactured in 10/98. Which means the hubs need to be thru 3/21/99. Now there is another option which is from 3/22/99. Each look the same have same measurements and everything. Difference is that the rotors (which I am replacing) are different. My question Is has anyone done this. I want to buy the other hubs (3/22/99) and rotors. and put them on the truck. being that the are 50% cheaper. Would that be a problem? Below is a web address of where I found My info . My part number options are : SP580204 and (cheaper) 515020. Can anyone help? I want to know if anyone has done this before.

1999 Ford Pickup F250 Super-duty - Front Wheel Bearings and Seals Parts -TIMKEN,PARTS PLUS BEARINGS & SEALS,PARTS PLUS BEARINGS & SEALS- Hub-bearing.com=