Setting Up a New 3rd Member Question

Hey Folks,

Moving the Duster project along slow but sure. I'm now to the point where I am ready/need to tend to the rear end. Currently a peg leg 742 w/3.23's, going to a Suregrip unit (Dr Diff) and 3.91-4.11's. I should have no problem getting the center section out and back in once it's built, but I am pretty much clueless when it comes to setting up differentials. So I will need to have someone, or a shop, in the area do the set-up for me. Any best guesses on what the going rate to swap in the Suregrip and new gear set would be? Just try to get an estimation on the labor so I know what sort of funds to set aside.

Thanks all,
Pat