The bracket was then clamped to the frame to ensure that it would stay properly located during the drilling of the remaining five holes. | 
Using the holes in the bracket as a guide, Peter drilled each hole using a Rota Broach, one of the coolest drill bits we've ever seen. | 
The bracket was then bolted securely to the frame using the supplied hardware. After the truck is taken apart and powdercoated, these bolts will be torqued to precisely 45-50 ft. lbs. |
Peter removed the original four-link arm mounts and tossed them in the trash. Now the arms will attach to the brackets that were just bolted to the frame. We made sure to save the original four-link mounting bolts, as they will be reused. | 
The stock shocks and mounting studs were unbolted. These won't be used in our application. Since we are converting to coilovers, the Bilstein shocks will go on eBay. | 
The four-link arms were then slipped into place and bolted to the brackets using the original Vette mounting bolts. These bolts are metric, so have plenty of wrenches ready. |
Both sides are now bolted together-it's starting to look like a custom rearend. | 
The original Corvette differential mount is a stout-yet-lightweight aluminum piece that also has a custom appearance. The Altered Engineering crew bolted the Flat-Out Engineering brackets to the mount, then clamped the assembly to the frame | 
When they were satisfied that both sides were located tight against the frame, level and squared, and the rear-axle centerline matched the reference mark, Peter drilled the holes into the frame. |