5.3 into my 95 Z71 have ???'s

[95Z71Mike]

I know there are a lot of threads about swaps, so theres a lot to read through.

What would I need to buy to put a 5.3 into my 95 Z71?

I am looking at a complete donor truck. So I'll have everything.
What extras am I going to need? Stuff that won't be on the donor.

It's a 99 Sierra 4x4 5.3/4l60e

I'll ask more wiring questions later I'm sure. Just need to know what I'm going to need to buy before I get into it.

Thanks