How many hours to replace the bearings in the rear wheels of a '06? I was told it was just under 2 hours per side? Does that sound about right?

I have a buddy who picked up a 2005 C6 back in October. In December he found a set of used Z06 quarter panels for sale in his color and installed them on his car. So for the last few weeks he has been driving around with the stock C6 wheels buried in the quarter panels. I was telling him that...