To make clear your description the outer bracket has a repair that is brazed together too the inner reproduction bracket?
No, the set of 4, were original, used parts, I had the reproduction ones in use at time of disassembling the car.
I only needed the inner ones as it turns out but saw this brass tack weld and wondered if perhaps there may have been a time or assembly plant that may have done this. I did figure it not to be typical of an Assemblyline procedure, various comments seem to all concur.
Are u sure they arnt 67 68 Shelby extended brackets?
Yes, standard Mustang brackets