Not sure if this was allowed, and I do not endorse nor work for these sellers, but I was looking on eBay for a 5.3 standalone harness or rework, and all of the new harnesses look exactly the same, and sell for $349 + or so. Figuring that they all came from China, I hoped on Alibaba and did a little searching and chatting. Turns out there is only one manufacture in China that makes this harness, and they sell to everyone that carries it. When I asked about pricing, she told me $268 shipped for 1, or if I order 10 or more, the price goes to $240. She did say that she can customize the harness to any spec I wanted, whether that was added or removing sensors or trans and lengthen/shorten the ECM leads. So I ordered one for $268, figuring I will save about $100 vs eBay. I will do a review on it when I receive it.
Anyways, here is a link if anyone is interested:
https://www.alibaba.com/product-deta...52c38538gfq5ON