Door and Ignition lock set - where to buy?

The door locks do not match the ignition switch (different keys) in my Duster.

I am looking for the best place to get a new matching set of door locks and a ignition lock cylinder. Does any one have any advice?

Also, What is the difference between the '70-'71 and the '73-'76 locks sets?

Take your existing door locks and your ignition key to a locksmith and have the door locks rekeyed to match the ignition key. The last ones I had one was $6.00 per lock if you carried them in.