I need help identifying this front suspension
My pro street 1963 Impala has what looks like a Mustang II based front suspension. The car was built in the late 90's, with a full tube chassis. What I need help with is identifying the actual source of the front suspension. As I stated, it LOOKS like Mustang II. However, the mounting holes are closer together. 4 1/2" vs 5". Due to tight clearances, drilling new mounting holes isn't an option. If I cannot identify and replace the bushings I'll have to totally revamp the front of the car. A project I'd like to avoid, if possible. I have photos, but don't know if they can be posted to this discussion.