This is one of the most inspiring threads. Well done sir! Mine is a work in progress. First 4runner I've ever owned. Stock SR5, v6, 2wd. White. You're thread has given me a lot of direction. Thank you.
I have a mystery sound as well. I've captured it on video. It only happens when I start moving. Never notice it at high speed. Happens driving straight or turning. Listen at second 10-12 and 28-34 of video. Thanks.
You tube video: https://youtu.be/Rc4Al5Qrj9s