Everything I have read from the e-brake installations tell you to remove the two bolts holding down the rocker tower in order to change to the 60lb springs. Now granted I have not yet done this (springs are sitting on the shelf waiting for the right time!) but what would be the problem in removing the spring clip and thrust washer from the horizontal shaft holding the rocker and sliding the rocker out of the way after locating TDC? It would appear there still would be enough room to apply the spring compressor and you would NOT have to disturb the head bolts. Like I said I have not yet done it so have at me...