On this site, someone with the screen name Roncallo , Roncalo or similar did the 107 conversion using mostly stock parts, be a search.

the 1997 DAS X with a RFID chip in the key really isn't difficult to deal with. There is a small black box behind the dash that talks to the engine computer and an antenna ring around the ignition switch. All you need to do is tape a good key in to the antenna then leave it hidden under the dash.

Breaking up systems is where things get difficult, using everything is less difficult as it all works together when new.