Obsidian SG-One
One of the things I love about going down to JBA is that there’s usually something interesting on the dyno. Today, it was the Obsidian SG-One, a unique 1967 Mustang that, according to the builder, has $1.3 million invested. Speed shop general manager and tuning guru Bruce Tucker was on the laptop, tweaking the BigStuff3 standalone to dial it in.
Under the hood is a twin-Rotrex-supercharged 392ci small-block Ford, pushing 10psi.
The car has a crazy level of detail - it’s stretched 7 inches from the cowl forward, it’s got a full tube frame, and a complete underbody tray with every vent and scoop functional.






