Hey I'm new to this site but I am in the process of swapping my old 5.7 to a "slightly" built 5.3 vortec. I reworked the wiring harness to make it a stand alone one and rebuilt a junkyard 4.8 into a 5.3 in my living room...yes in my living room. I will attach a link so that you can hear it running (on the patio lol). But I will be sure to post more pictures ASAP.
Here's the latest video.
https://www.youtube.com/watch?v=luTSb-HVqGo
I'll update this post a little later on with a lot of pics from my living room build.
Later!