I just registered with you guys, I am also on the yahoo gulfstream, Oshkosh, dieselrvowners.com and rvtalk forums...
I have owned my 93 GS since 2008, since purchasing it I've replaced the Engine with a 230 Cummins and MT643 automatic. New Radiator and other parts too numerous to mention. I also have re-worked the brakes over and over again, finally finding I had the wrong master cylinder (thanks CARQUEST) The latest is that my wife and I designed a 3 color paint scheme in 2011 and sequentially began preparations to repaint this year, we finished just in time to camp over memorial day weekend. Someone may find the photos attached to the link below that chronicle most of the paint job we completed at home in our driveway.
http://photobucket.com/93_gulfstream_sunvoyager
It can be done if you have enough energy and desire to save a bunch of money; some of our older coaches look pretty tired.
Take care!
Doug