I've made a template for the new fueltank PTB 275.
For now i just copied the dds files into a folder i created in ..\Bazar\World\textures named 'AeroWeapons'. It will affect the F-5 tank, just so you know.
Here is the dropbox link to the template --> https://www.dropbox.com/s/snzfp5ak4gf9i2o/PTB275_template.7z?dl=0
To add the tank to the plane, just add this at the beginning to your EA_6B.lua.
-> { CLSID = "{0395076D-2F77-4420-9D33-087A4398130B}" ,arg_value = 0.0}, -- PTB-275