On the EK chassis (96-00) only the 99-00 Si's had the DOHC VTEC stickers on the side. Also, only the 92-95 VTEC engines have VTEC written on the valve cover.
So, if you really wanted to, you could get a valve cover from a 92-95 EX/Si civic and replace your with it, as they are interchangable!!
Also, please don't get a DOHC VTEC sticker for the side of your car. BUT, you could get a SOHC VTEC Sticker for your car. I did!!
Check this for reference:
http://www.hondacivicforum.com/m_435632/tm.htm