Hope this helps some others. Links are included below for both the gaskets and also forum discussions with plenty of information. *** Price seems to have shot up on eBay since making this video. I would keep an eye out for group buys in the forum link provided below.***
Forum link w/ GB details
https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/183-side-finisher-rubber-replacement-and-rear-side-window-trim-replacement/page30
eBay product link
https://www.ebay.com/itm/225606622802?hash=item348733de52:g:y9EAAOSw7NNkfuZ1&amdata=enc%3AAQAIAAAA8BUEl63RBEwV0HR4QE99zpROMR69R94%2F53xUgbswfqXN%2Fu1wasB1RhyRyZy%2B%2BlcUuebHeGQbvHRI5gJZfKqpPXEIccx6wO%2FLjFtaG4l8RTfh1sGkazjk9DLuWL7oCPaUsj%2BmEb7ycxqhIIr4fsVdx%2FnQbQd1GBoUQrdV9eEze%2FP%2B1pmrf%2F5yZdzd2JO%2BewxMcKdfSQDU4mXqI76PkU37aVHs%2BjjOGsIOb%2FvnxumkR8OybkdtZpWLGP43yYa0lqLUblEpg0hZzkXse0ctyoRYTrBefzOSQxWIGvmm3ulhwydnLd1WFvKkr%2FmdHN0uO7sA9Q%3D%3D%7Ctkp%3ABk9SR-ao3sylYw