Its kind of a mismatched bunch of things bill thinks it either has a surrey tub or was a surrey built to be a four wheel drive this color paint kind of proves that.
It looks to me like that has a Carter YF carb on it instead of the WO. It perhaps might have the DJ style intake on it and then it would have used a paper element like you have and not an oil bath.
Just a stock engine one of the previous owners put a two barrel carb on it and it sat to tall to fit under the hood hence the modification (gaping hole) in the hood. The current owner had replaced the two barrel with a stock carb by then the stock air cleaner was thrown away but I have one from my parts jeep it will be brought back to stock and the hood patched when I get it ready to paint.