Moving on to mounting the diff, I started out by finding the centerline of the car and seeing what angle the engine and transmission were sitting at since the engine is off-center while the trans is almost centered. A lil trig told me it was about .7 degrees off to the passenger side and the angle finder says the whole thing is angled 2.8 degrees downward. The diff needs to be 2.8 deg up and .7 off to the passenger side to keep the flanges of both the trans and diff perfectly parallel