not all is translatet so try the argentinian site
http://www.porsche917.com.ar/
German site about 917-Strasse and the GRossman 917
http://www.izdebski.de/Porsche_917/9...7-strasse.html
Restauration of a 917
http://project917.itgo.com/index.html
Registry of the chassis numbers
http://962.com/history/917/index.htm
The 917 of Grossman is possibly convertet to racecar again (last remain is
Rearmirror)