Chassie inspections or track tech inspections??
There was a sheet handed out to chassie tag inspectors about allowing 2-bolts per side a few years ago. I was hanging around a car getting tagged and thought the inspector missed it and mentioned it, opened his book and saw the supplement. Was in part with the chassies that were a soft tail design.
4 per side is always best to avoid any confusion, Step up in drill sizes till just undersize and ream hole to final to get best fit because you are doing this by hand and not on a machine