school bus donor engine and harness

[ol-blacky]

Recently seen a school bus with a 8.1l vortec l18 and it got me thinking as the wiring harness seemed much trimmer and simpler than the ones found in pickups and suvs. I didn't have alot of time to look over the bus so I might be missing something. My searches come up empty other than old school buses are cheap.

So would a school bus or workhorse chassis 6.0L or 8.1L make a good donor wiring harness for a swap into an old truck?

How used and abused are these engines even with low miles I assume they probably have a gazillion hours?

In reading about dirty larrys 8.1 swaps it seems the workhorse style ac and alternator brackets are desirable.

Thanks
Ol-blacky