I just took mine out and left them out. They caused a huge blindspot. It's amazing how much bigger the interior seems without them. Also reminds me of the inside of my '65 Fastback so I love having them out.
Here's a thread about a company that sells a kit that makes them adjustable. http://forums.bradbarnett.net/showthread.php?t=34875
Post # 67 on page 2 shows the installed pic.