Brake Booster to Master Cylinder Adapter Plate Blueprint - Ford Bronco Swap

This document is a dimensioned mechanical blueprint (CAD drawing) of a circular adapter plate, uploaded as "Booster2MCplate.jpg", apparently a plate for mating a brake booster to a master cylinder. The plate has an outside diameter of 4.5 inches with a central through-hole of 1.77 inches diameter. Four holes are arranged around the center: two tapped holes labeled "2X Ø.2585, 5/16-18 UNC - 1B" (threaded holes for 5/16-18 fasteners) and two clearance holes labeled "2X Ø.34 THRU." One hole pattern is spaced 3.25 inches apart horizontally (the two threaded holes on the left and right), while the other pair of holes (the Ø.34 through holes) is spaced 3.94 inches (100 mm) apart on a diagonal axis. The angular offset between the two bolt-pattern axes is 37 degrees. All dimensions are in inches unless bracketed in millimeters. A reader can use this drawing to fabricate or verify an adapter plate that converts between a booster stud pattern (3.25 in / 5/16-18 threads) and a master cylinder bolt pattern (100 mm / 0.34 in clearance holes), offset by 37 degrees. The drawing carries no title block, part number, date, or vehicle applicability information.