[NEWFISHER]

Yes, those 4 degree shims will work, but if you need them now you wont when you change the engine /trans angle when you raise them up. unless you raise the engine and the trans the same amount and then if 4 degrees is what you need they will work. If you are going to address the trans issue before this you will first need to raise the engine slightly, tilt the trans tail shaft up ( try to stay at 2-3 degrees downward) and build a spacer for the tail mount or raise your crossmember and add spacers to the frame end or fab a new one. Then measure your diff yoke and see where you are. You want to be between 2 and 3 degrees (difference or less) than the tail shaft ,as the diff points up for ujoint cancellation. Then order the correct shims if needed. You can always cut the tube stands and loosely assemble the ubolts, rock the pinion to set the angle then weld the stands back on. More time than money theory