i have the diff which i removed from my car when i broke it last week.in the 3000 miles i did in it it has never whined or gave me any cause for concern.its all painted up with bmw silver paint and the bolts are done gloss blackand its a very nice job!i had a 4x4 beam so i buffed a samll bit from the top mounting hole but will easily go back into a 2wd beam with a washer.£200 + delivery