I've found these sites that supply clips, fasteners, etc. while searching for interior trim clips & the reveal moulding gasket.
http://www.autobodyclips.com/
http://www.cliphouse.com/detail.aspx?ID=869
http://northlandfasteners.biz/Store...acturers_id=&pfrom=&pto=&dfrom=&dto=&x=55&y=9
http://www.thefastenerwarehouse.com/page/page/584919.htm
http://www.amkproducts.com/Catalog_PDF.htm
http://www.autobodyclips.com/
http://www.cliphouse.com/detail.aspx?ID=869
http://northlandfasteners.biz/Store...acturers_id=&pfrom=&pto=&dfrom=&dto=&x=55&y=9
http://www.thefastenerwarehouse.com/page/page/584919.htm
http://www.amkproducts.com/Catalog_PDF.htm