updated this MiG-25 mod
I managed to place the camera in the cockpit with help of Views.lua file fr om the TF-51D aircraft. (cockpit is low resolution... But still more immersive than previous MiG-25 mod wh ere camera floats above canopy)
Sadly couldn't get Su-25T Cockpit and R-40R missiles to work (R-40T still works, aimpoint is very high though), maybe you can?