Looks like it is for a /6 truck by the looks of the airhorn. Trucks had the oil bath aircleaners that clamped on the airhorn instead of using a stud like a dry element air cleaner. The stud can be added though for cars.
thats the one !!
i had one of those on my 71 D400 flatbed and it drove me crazy. i read some threads on a jeep site and most people were having similar frustrations. i ended up getting an autolite 2100 series 2bbl carb from a early to mid 80's ford (van, pickup, etc.) and a cheapo carb adapter from checkers, installed it with a little linkage tweeking and never looked back. they come in two sizes, get the smaller cfm model.
save yourself some grief and throw that bbs as far as you can. my 2c