not trying to be too technical here, by "factory car" I just meant some cars that came "stock"/ "off the line" / "off the lot" / "factory equipped" with torque boxes, from convertibles to small blocks to hemis, or even my car that came with none of the above. None of these cars ever came with frame connectors
They didn't come with 550+ HP either. I'd do the torque boxes and weld-in frame connectors at a minimum. I would also make sure it has a good set of disc brakes in the front too.
