I'm on the downhill side of this project, and I've got several questions, so I thought I'd create a thread for them. I apologize if some of these have been answered already, I've been looking through all the various conversion threads, and there are a few things I still need help with.

First: the rear O2 sensor on the drivers side is basically touching the side of the transmission:
Click image for larger version. 

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I was thinking of using one of those angle spacers like this:

https://www.amazon.com/Degree-Angled.../dp/B00B1U6I54

Any feedback appreciated.