ESCI had one in their 1/24 automobile lineup. It is the long-bodied version and was released in both Philipine Taxi and African Safari versions. To get to a '70's version, you will need to do some surgery to remove about a 30" section behind the rear window. IIRC, the front grill was the later squared-off version.
Maybe someone on one of the forums has one, or you may be able to score one on e-bay.
Phil Schenfeld - former '72 FJ-40 owner, and wishin I still had it