interchangable parts?

i know its not a good idea but i was looking on ebay for some parts for my 3.0 92. i noticed someone selling parts for a 3.8 engine. i was curious if any of the parts would be interchangable and if so what kind of results might i get? the parts i noticed was a cpu and an alternater. odds are i probably wont get either and put them in but i was just curious of what might happen if i did. again, are any parts interchangable from a 3.8 down to a 3.0? thanx for any help.

the 3.0 and 3.8 share nothing in common. The CPU DEFINITELY wouldn't work

so absolutly none of the parts are interchangable?

the only thing they have in common is oil, gas, and air