OE Smog Equipment

This will probably be mainly for the California guys but anyone who knows please feel free.
I know this is not the usual mod but... The smog stuff was removed from my 85 ram and I'd like to know if I can replace it (IDK what is supposed to be there) and what it would cost.
The thing is I may be going to buy a motor from Uncle Spence mainly because it runs and has the smog stuff on it but shipping is eating up the money I was going to spend on rebuilding it. So if I can get the smog stuff cheaper then I can tell him so he can dispose of the motor elsewhere.

I don't need the smog but I want it.