Hey guy's I have a R180 CLSD that I want to fit to my car but before I install it I was thinking it would be a good idea to take it to a diff shop and get it checked over.

Can anyone recommend a good diff shop preferably NOR. Also can anyone tell me what I should be asking them to look at? From the limited knowledge I have I guess I should be asking them to check the bearings, backlash and clutch plates? anything else?