VHMM / PaCSWS-1G missiles. They come in a pack of 2, they have a cockpit and clear canopy that you can cut from any acrylic sheet (or any plastic container from your food store). See the pictures for dimensions of the acrylic cut.
You can also print this
PDF file to easily cut the clear plastic sheet.
They are compatible with the single missile pylons for your VF 31, 171 and SV 262. You will need the special Station 4 pylon to adapt them for the VF 25.