The first jig hard point will be the lower front A-arm front attachment point. This may look a little odd if you’re only acquainted with street-car derived race cars, as the lower front A-arms almost meet in a point under the car, much like a Formula 1 flexure. This gives the suspension the optimum geometry for minimal camber change under body roll, and is part of the reason street-car based race cars can’t come close to the performance of a purpose-designed formula race car. The jig attachment point is fabricated from 3″ x 1/4″ steel C-channel, cut to the basic shape with the plasma cutter, ground with an angle grinder closer to its final shape, then the reference faces were milled on the milling machine to an accurate final shape. Then I turned up a small cylinder like the one that will be welded into the chassis, to serve as a spacer to locate the braces when they are welded to the chassis table. In the photo, the braces have not yet been welded to the jig crossmember.