yes there is but it will likely cost more that the wholesale value of the
car so it not worth it unless you have $$ to burn....

Yes...you can add a keyless entry to your car.

I would imagine that a local car audio shop would
do the work.  You need one, or two, door lock motors
installed and a Keyless/remote starter.

The job should be around 50.00 per door and 200.00
for the keyless/stater.  So figure 250 to 300 all installed.

And do yourself a favor...buy a good name brand. Like
Viper, Clifford, CodeAalarm, or Audiovox.........