junk yard
The roof on the Geo Tracker is not designed to lower, it folds back similar to a sun roof. Release the levers behind the sun visors and fold the top back.
Depending on the year there should be one or two latches above the rear view mirror or sun visors.
http://www.oempartsguys.com/blog/how-to-find-your-replacement-sun-visor/
Some prefixes for the word "visors" are: un-, dis-, re-, and pre-.
All Sentra sun visors are the same from 1995-1999.
1995 is not same as 1997 Civic Sun visor. The 1995 Sun visors fit the 5th Generation of Civics, from 1991 to 1995. The 1997 Sun visors fit the 6th Generation, from 1996 to 2000. See the related link.
you should be able to get sun visor replacements from a GMC Dealer in your area.
Answer Dealer or wrecking yard. You can find a replacement sun visor for your 89 Beretta in a few places. You can try your local junk yards, Craigslist, eBay, or an online vendor. For a in depth blog post about finding a sun visor try: http://www.oempartsguys.com/blog/how-to-find-your-replacement-sun-visor/
the soft top latches in those holes
Korean women are really concerned about keeping their skin white and resist it in any way possible from tanning which is why it's a big trend to wear sun visors especially among women.
Junk yard. Look on craigslist for people parting one out.
No the spyder is a convertiable and is made different.