The site below has a very thorough series of photos and explanations of restoration work occurring on Western Pacific F7A 918 in California. Click on the Work Progress links. If you're thinking of restoring a carbody diesel unit (including construction of homemade plymetal side panels), this is a good place to start looking. Well done.

http://www.trainweb.org/wp918d/918_main.htm

Niles Canyon Railway also has a detailed website of the restoration of Southern Pacific SD-9 #5472 at: http://sp5472.ncry.org/