Can someone help me with part D2(clear part under canopy)it was missing in my box and im trying to cut it out of clear plastic but it dos not fit,dos annyone have such a spare part?

regards

It's from a tamiya f-117A nighthawk.

Are you referring to the HUD? The "glass" is easily made with a bit of clear plastic, for example, the clear plastic on a pair of scissors package. When cut into a square, you have enough plastic "glass" to make a dozen HUDs...