I agree Eric, I couldn’t see the purpose of the hole or what you would be looking for...it is most likely a remnant of the past. As to the toughness of the factory sump plate...it did look to be reasonable, but it is all relative to what it may bash up against. One area not to neglect is the Air Compressor and the APT kit is worth looking at. Ben has put together some informative install videos for all the kit APT Offroad

