Differences between 2000 and 1999 V6's?

I have a '99 Tacoma with V6, and found a low-mile 2000 V6 engine that I'd like to pick up for a spare. BUT I need to know if there are ANY compatibility issues whatsoever between a 2000 V6 engine and a 1999 V6 engine. Anything at all, and that includes anything that bolts to the engine, and smog issues, too.

Or are they identical in literally every way?

Thanks,
Nate

I have a '99 Tacoma with V6, and found a low-mile 2000 V6 engine that I'd like to pick up for a spare. BUT I need to know if there are ANY compatibility issues whatsoever between a 2000 V6 engine and a 1999 V6 engine. Anything at all, and that includes anything that bolts to the engine, and smog issues, too.

Or are they identical in literally every way?

Thanks,
Nate
like i said on the other sites i am 99.9999% sure they are the same. red

Thanks, Red. I didn't mean to "spam" the different forums with the same questions, but wanted to make sure I got as much input as possible before laying out a bunch of money for the engine/trans I found.