its not sounds funny, but some early models did not come with ABS.
najafi, it would take lots of money to retrofit one as it involves lots of parts change and might not work...
one bit cost is the front/rear wheel hubs need to have the sensor hubs & rings, meaning buying new front struts & rear arms...
others is ecu, wiring, meters internal wires, etc.
better live with it or buy another car.
but if you want to, i can direct to you one person who can do it, actually 2 persons.