Get a column out of a 76-79 GM van (or even a F*** van of the same vintage) They had tilt wheel with a column mounted automatic shifter (perfect for you), turn signal stalk and hazards, with dash ignition.
You will have to cut the housing and use a joint to hook it up to your original steering box.
Best bet is swap meets or local shopper rags, cause most junkyards will think you are putting it in a tri 5 chevy and want bucks for it.
Chris