You can scrap the P.E. instrument panel as well, since it is leftover from the UH-1D kit and totally incorrect for a -1N. That's another reason to get the Cobra Company interior set, as it includes a beautiful instrument panel and center console.
Currently, there are no 1/35 scale lo-vis Marine decals for the Huey (only the Rescue squadron Gino mentioned above). I have a feeling, though, that some of the Marine decal manufacturers will release some 1/35 scale stuff for the Cobra and Huey sooner rather than later.....
Andy