i live here in cali "bay area" the motor cannot be older than the car for starters.
second there is a visual inspection so all the 02 sensors and knock sensors need to be in there original location.they go by the helms manuels and look for every thing.
then is just the regular emissions tests if you pass those your good to go.they give you a sticker stating your new motor to put in the car and thats that.plus a few hundred bucks to a smog rep wouldnt heart either.if you live in the bay area there are quit a few around and not to hard to spot...good luck to you and me "i got a swap coming up also in the next couple weeks"