Vibration and Noise Issue

Also, from the best I could determine with my angle finder, the transmission is currently sitting down 2 degrees and the pinion is about 4 degrees up. The problem I have is that I have F body springs in the car complete with the spring isolation setup. Does anyone make shims for these? The center hole on the perch is something like 1 5/8 inches big. I could possibly just take out the rubber spacers and put in solid wedges in their place, but I'm not terribly fond of the idea right now.