This a later McDonnell three-view. It's similar but the landing gear has been shortened and there are other detail changes like the shape of the vertical fin and rudder. It doesn't show different engine exhausts, but I assume that the draftsman just didn't bother:
The F3H-G/H mock up was also a bit different in detail and doesn't seem to have had a landing gear at the time. The inlets appear to be larger and there is yet another variation of the vertical fin. It did depict the different sizes of the Wright J65 and General Electric J79 afterburners, with the J79 on the right side of the mockup and the J65 on the left.