Need to find a conversion kit

Was up! i need some help here. I have 1985 ford mustang and i will like to convert the front end so i can modified a wide bodykit for 1987 mustang bodies? or just wandering if the body kit that i found will fit anyways with a lot of modification on my 1985 mustang? well here is the site to the bodykit ( http://www.wingswest.com/products_detail.asp?page=1&id=263 ) let me kno thanks