This is pictures of two different Boeing Vertol 107. If you want to learn more about the Vertol read about it on Wikipedia.
There is only one base kit (with new tooling) of the Boeing Vertol 107 (and it's different developments). The first version was the CH-46E Current U.S. Marines "Bull Frog" released by Academy in 2004. The kit has then been re-released three times with new parts each time. The KV-107-II-5 J.A.S.D.F. (2004), the CH/HH-46D Sea Knight "U.S. NAVY Version" (2005) and the CH-46A/D "U.S. Marines - Vietnam" (2006).
If you as me want to build a Hkp 4 (Swedish Air force) the KV-107-II-5 J.A.S.D.F. is the right kit for the early versions. For the later versions you need to modify the rear part (maybe by replacing it with parts from a CH/HH-46D Sea Knight "U.S. NAVY Version" if you can afford two kits for one model).
