His book says "If you have a later-model 911, you're in luck, as you don't have to remove the torsion bar covers and radius arms to get at least some degree of adjustment. To raise and lower the rear of the car, simply loosen the large nut and bolt closest to the torsion bar. Then rotate the other bolt located next to it. This bolt is eccentric, and will cause the rear of the car to be raised or lowered as you turn it."
Well, that's what I thought would happen. As I'm writing this, it dawned on me that "later-model" isn't very specific, and I may not have the eccentric adjustment on my '88 Coupe. I loosened the "Lock Nut" shown in the pic, and nothing moved, so I thought simply turning the eccentric would change the height. I began CCW since it made sense that CCW should lower and CW should raise. As soon as the nut moved...*SNAP* I thought something broke, but looking closely, you can see where the plate was released and moved. Also, the Lock Nut bolt now spins and will require a very thin wrench to fit between the radius arm and the body to hold it for tightening.
I suppose the question I have is whether or not I have the adjustable "later-model", or do I have to go through the torsion bar plate removal procedure to lower the rear end?