I also have a nasty rattle only with window down inside door somewhere as I accelerate faster. What are the anti rattle window seals and where do they go in door? Will that typically resolve issue? Are these seals called something else as I can't find them in any parts supplier as anti-rattle seals.
Your 50 should have a fuzzy attached here
...pic... I got a replacement from truck shop in orange Counterparts brand
It's part of a kit
Your rattle with the window down could be the regulator. Check o see if your leather rollers are intact.
Good luck
