Just so you know. Professional flat rate manual quote is 2.7 hrs for a /6, 4 hrs for a small blk. Anything over 5 is excessive without cause. So if you get a crazy quote, you may decide to do it yourself. good luck . cheers.
EDIT - Be absolutely sure it is the rear main, cuz after doing all the work to find the source is elsewhere. Clean the begeebeez outta it with brakclean to be very, very sure ! !
