Installed the front/rear UCF diff covers. Everything lined up perfect. The Ford 8.8 held 4.5 quarts of fluid and the HPD30 took 1.5 quarts of fluid. I got Valvoline 80w-90 w/ limited slip. $6.49 a quart and 3 tubes of silicone, but I only used 2. I Bought 7 quarts of fluid just in case. I also had to buy a T-70 star bit for the fill plug on the HPD30. Had to make three trips to the store for more silicone because the first tube burst while I was applying it, and more fluid for the front. I am letting it dry over night and tomorrow I was test the steering lock to lock to see if it touches the cover.