You need the factory radio, keyless entry remotes, and Honda part number 08E51-S01-101F

You can get the remotes and module from www.honda-accessories.com. Get the correct remotes for your year car and get the module from a 99-00 civic EX.

Module---> http://www.handa-accessories.com/civelec00.html

Remotes ------> http://www.handa-accessories.com/civic98.html

I just installed this in my 96 civic LX about three weeks ago.