Jordi bought this CJ-2A with an interesting hardtop (the plates indicate this is a jeep outside the US) and posted pics to Facebook. To me, this top looks most like a Station Wagons, Inc, body. The suicide doors and certain elements are extremely close (especially in the Pop Mech ad), but not exact.
Popular Mechanics Ad from the January 1948 issue of Popular Mechanics, pg 266. This ad appeared in the February 1948 issue as well.