bellow text from http://modelingmadness.com/scott/mod/ef111preview.htm
Set your semi-way-back machines to the late 1980s. Hasegawa is trying to think of something to do for their next 1/72 kit. It has to be a model that the Japanese want to buy and it has to be something that can be done in a multiple of versions and boxings. Not wanting to do the right thing and produce a new mold F-8 that can be done in a multitude of variants and decal schemes, they pick on a plane that has not really had a great kit done of it before, the F-111. Sure, there was the Revell 1/72 TFX kit that wasn't bad, but it was not state of the art. Later Monogram released an EF-111A, but did no other variants!
Their minds made up, the engineers went to work and provided a really super kit. It had everything one wanted. A zillion parts that were interchangeable to do many variants. Engraved panel lines. Accurate outline. The wings had drooped slats and flaps. It was bound to be a winner. And it must have been as the kits are not that easy to find. Like 99.9% of all their 1/72 kits, the cockpit has decals for instruments and console detailing. The kit was released in all possible variants including the A, C, D, E, F, as well as the FB-111 the EF-111. The biggest differences between the types is that the C and the FB had longer wings, the D,E,F had different intakes, and the EF had a different tail and a 'canoe' under the fuselage.
The EF-111 kit has many extra parts left over from the F-111A boxing, but has a unique sprue (marked above in yellow). If you really wanted, you could build an F-111A from this kit as all the right parts are provided, just no decals. There are even those neat long range fuel tanks that you can rob and use on your next 1/72 A-10 (as I think they are the same). Probably the only down side to this kit is that it is not designed to be displayed with the wings swept back. This would require some surgery to have the flaps and slats in the up position. I've never seen one of these built in that way so it must be a bit of a chore to do properly.
I'll skim by the instructions as Hasegawa's are fully up to world class standards, though they do delve into this weird paint mixing thing rather than just telling you the proper FS color so you can use someone other than Gunze's paint. Tamiya does it too and it is a bit irritating. Markings are for Mountain Home AFB based 390ECS aircraft. All are painted exactly the same (no surprise) and the only difference between them is really the serial number. Hasegawa didn't even do the Boss Bird which would have been nice. This kit was released in 1993.
You want a 1/72 EF-111A, then it is either this or the Monogram kit. Most will choose this one as the Monogram kit doesn't have the detail level and is a typical Monogram kit in terms of fit. While the Monogram kit has operating swing wings, for many that isn't the draw it was when we were 12. Interestingly, off all the F-111 kits done by Hasegawa, this is the only one that is current in the catalogues