The Buick Chassis manual Group 110 details alignment of the front sheet metal, i.e. the fenders, hood, and radiator support. For years I've struggled to make sense of these instructions, in part due to the terminology used for the four most critical bolts. These four bolts include two on the driver's side and two on the passenger's. One pair is referred to by various names in the manual, including "front of dash directly behind hood hinge", "front of dash slightly below the hood hinge", "vertical fender to body attachment point". I've included a picture of this bolt as it appears on the right/passenger's side. Driver's side is similar. The other two bolts are referred to as the "chassis sheet metal to frame bolts", which are the bolts through the body bushings on which the radiator support attaches to the frame. I've included a picture of this bolt from the right/passenger's side as well. I won't duplicate the excellent instructions in the chassis manual, except to say that each "front of dash directly behind hood hinge" bolt governs the gap between the front edge of the door and the rear of the fender. Add shims at this bolt to increase this gap. Add shims at the "chassis sheet metal to frame bolt" to make the gap parallel, by tilting the fender "in" towards the door at the top. The "chassis sheet metal to frame bolts" allow the radiator support to be moved right or left to square the hood opening. I've found it extremely helpful to measure the gap between the fenders at three locations (top rear of fender, adjacent to rear of hood; in front of hood hinge; at front-most bolt at radiator upper tie bar), as well as the diagonals (from bolt head at "shroud top area" to front-inner tip of fender). Use a pry bar between the frame rail and radiator support to adjust. I hope these clarifications will help! I've actually taken a three week class in sheet metal alignment, back in 1986, and worked as an amateur restoring GS' for forty years. Only now with the above information do I feel confident in this task!