Yes, we matched the OEM hole pattern so the OEM and aftermarket top cases and extension plates would bolt on. We plan to offer an extension plate as well. We located the rotopax mount holes so that a 2 gallon rotopax tank sits completely aft of the passenger seat. That way the passenger doesn't have a plastic tank stuck in their tailbone. As well as other brands of throw over luggage such as Giant Loop. It was a key reason for the design, but it was also to give people the option to remove the handles if they don't ever carry a passenger. And to shrink down the handles to a more reasonable size. The OEM grab handles are huge.