Vtec from a 97 Lude into my 92 Si

yeah i know that this question probably has been asked more then a million times but there are alot of posts to go through. I purchased a rolled 97 lude with a Vtec engine bc i blew my H23 up and i want to put the Vtec in my 92 from the 97. What all do i need or need to do to make it work besides the ECU. please help i need to get this done. thanks.