vantage, thanks for the info...I think I screwed up. The louvers I'm interested are the ones that sltwtr (from Mystic,CT) has...called Afterthoughts Auto 1/4 Window Louvers. Those louvers definitely cover the gap between the window and the window frame...but they look like they must have tape touching the body...
2006 Mustang GT Premium, Windveil Blue, Light Graphite Leather, Auto, Shaker 500, IUP
2006 Mustang GT
2002 Nissan Maxima
2001 Corvette Coupe
2011 Honda Pilot