Silvia S15 onto a 1994 4dr accord

hey you guys, i was wondering. Just say i wanted to convert my 1994 honda accord 4dr headlights into a silvia S15 and than i wanted a Invader kit for it. How would they do it? would they need a kit with a S15 headlight already or will they cut it and do all that things? wells any info would help..thanx...