A mounting and alignment system for selectively securing and accurately aligning a first plate relative to a second plate, the mounting system including a shank and a receiver arrangement with an annular locking ring and an annular receiver bushing. The bushing having an inner passage and an oppositely facing outer bushing surface. The outer bushing surface having at least one receiver bearing surface shaped to engage a bearing surface of an associated mounting opening in one of the plates to align the receiver bushing laterally within the opening. The inner passage of the bushing being shaped to receive and align with a shaft portion of the shank. The locking ring configured to secure the bushing axially within the mounting opening.