The 9" front discs is a big clue, probably used a Mustang II front suspension. How many kit makers used or still use this front suspension. LAX did. Maybe B&B (successor). Or, the builder could have bought a complete Heidts or other manufacturer's front end setup based on Mustang II. You can buy these with a front crossmember and 9" discs. 9" front rotors really suck and shouldn't even be offered. With a minimum 15" front wheel, 11" rotors easily fit and are a 22% improvement.
