Frame Connectors - install question

With these cars being built by hand on assembly lines 50 years ago theres always variation from car to car. Sometimes up to 1/8" in dimensional differences from car to car. With subframe connectors it's really better making them yourself to fit exactly to your cars chassis and then weld them in. That's not to say you cant make em fit. You can cut, grind modify anything to suit.
Cars still have tolerances. Some manufacturers are worse than others. Modern repair equipment is very precise.

If the Manufacturers could build to zero tolerance, it would make the repair process a lot easier.