Well I ask cause as far as I know, they switched to composite in 92 I think. So the answer to your question is just as easy as it was for the previous owner to switch em to sealed beam lol naw, I wouldn't imagine more than removing the grill and putting the composites in. Its like the same concept and shape just plastic "lenses" instead of glass and the sealed beams are smaller so they are farther back but the plastic of the composites fill that gap. Crazy or someone will verify.

 

It looks like you'll need the whole composite assembly though.