You will need (at the least) sir hood, front bumper, headlights. If you have a 90-91 the fenders will work, also the radiator support will work. the hood, headlights, and bumper are not mix/match, meaning that you need all or none for it to fit properly. here is a write up on everything you would need to do for an sir conversion on an EF, plus where to get it

http://www.jdmuniverse.com/forums/sh...ad.php?t=17535