i think the lens is interchangable from the sounds of ebay ppl selling 180sx, trueno compatible ones ?, motor on trueno popups are came as celica think st185's they were ? same with sunroof but thats irrelvent, by face plate im guessing u mean the sheet ontop ? diff size from 180 im fair sure 180 is wider, i know some celica ones are close but shape is diff, could work with an mr2 maybe with toyotas interchangability but dno bout 323