calhouncm

Hello, I am trying to determine the differences between a 2000 and 2001 or 2002 5.3l motor for a swap. From junkyard lookups it only shows a 2000 as compatible since my vehicle is a year 2000. I'm assuming that their are small differences as I know the block is the same. Can anyone tell me what electronics or pieces I would need to switch over to make this swap work with an engine that is not also from a year 2000?

Thanks