Well I purchased this(haven't received it yet), because part # checked out and I've used it a couple times before with previous trucks. Got my truck yesterday and realized there is this 'plug' back there where I would normally install. Can I still use this spot within curt part # or can I order something else to make it work. Rather than returning and buying something different. I Like this because it's plug and play simply drill a hole. But don't want to drill another hole if there's already a spot from factory to utilize...