It's actually the Helms factory service manual for 1993 Integra in pdf format that some kind soul scanned page by page and divided up into chapters and has kind of circulated around the net. All I did was split off just the GSR part of the cylinder head chapter and made a new pdf file which I uploaded to my personal web space. Unfortunately I don't have enough space to upload the whole manual, but I'm sure it's probably still floating around the internet somewhere.