The sidesteps were installed on the assembly line kinda haphazardly in my opinion. I've unbolted alot of them in unmolested jeeps and see very rough holes and not necessarily a great bit of quality control. A lot of cases the holes are so jagged it look like they used a regular drillbit, didn't care that the edges or jagged and just slapped them on. if you have the holes from the sidesteps they were likely there from the beginning if you have no sidesteps and never had them you won't have any holes. RisPony, I have a rubbing of a factory set floor pan if you want to make it "exact" before you drill let me know