Well, yes it will fit inside. No it will not work.
The x80 lamp assembly reflector is larger than a P60 (D26) and smaller than the D36 size.
I tried both in my 8NX. I could not get the P60 to light and the LF D36 bulb was too large to fit inside. I did recently read that someone was able to get his P60 to light in one with the bezel screwed all the way down. It may work in the AX but it didnt in my NX.