Just an FYI,, I just found out today in Screwed up California, you can't swap out a car engine into a truck. The referee says that the state has determined the emissions will be heaver since the truck is built to haul things. So it is a no go with the state. But you can swap in a truck engine into a truck. I know, I know, it makes no sense at all but that is what they told me.
OH and if you do a swap they must be able to plug in and commentate with the PCM or you fail. The PCM must also have the proper Vin information in it to match the paperwork you bring in. So now the PCM must match the engine.