i have 1992 gs 500e and wanted to know if i got the back left,right ,and the middle fairing off a 2004 gs 500f  would the fairings work or could they come close to work?

I have done this on my 97. They are not a direct fit and yes they can be made to fit but you will need the tank, seat and tail plastics....along with a welder.

For your reading pleasure:
http://gstwins.com/gsboard/index.php?topic=32840.0
http://gstwins.com/gsboard/index.php?topic=29965.0

There are plenty of similar threads if you want to search more.

 thank you