Its a Chris Alston's Chassisworks piece. Here is a quote from their website
"Chassisworks’ g-Machine front end is a truly versatile high-performance suspension
solution, suitable for g-Machines, street rods, muscle cars, or any project in need of
optimized handling. State-of-the-art engineering workstations with Pro/ENGINEER
software—combined with our advanced, automated factory—enabled Chassisworks’
engineers to create a current-technology, competitively priced, handling performance
front suspension system. Chassisworks’ new g-Machine design, developed with the aid
of finite element analysis (FEA) software, is far superior
in performance, reliability, and ease of installation
than components made to directly replace 40-year-old
‘60s muscle-car geometry and variants of the 30-
year-old Mustang II suspension. Although late-model-
Corvette–based systems offer similar performance,
your choice of wheels is extremely limited to flat-face,
high-negative-offset wheels. The complete suspension
and steering system is factory‑welded directly to the
bent-tube billet-component crossmember, ensuring
perfect geometry and eliminating the need to weld
multiple pieces or make complicated measurements
while installing the system."