The Vette rearend was positioned under the frame using a cart as support. Before it could be installed the square dampner bracket on the top ends of the aluminum wing must be removed (they are aluminum blocks with rubber isolators and aren't re-used). The rearend can now be bolted to the wing brackets. The large rubber bushings at the mounting ends of the wing have little knobs inside them for metric bolts. You must either use the stock Vette
metric bolts (which we did), or drill them out and use the bolts supplied with the kit.