The Gloster Javelin ( last plane under the Gloster name ) was an all weather interceptor.
One has the twin "Sabrina" belly tanks, and the other does not.

model in full dimensions in blender 2.79b and scaled to 1/100 for the .stl file
scale down to 35% in the slicer.

as usual, the dice are 15mm for reference
if I can't print it, I don't post it.