Manuals for S13's - on-line and other

Does anyone know of a good source (on line?) for part number pdf., wiring diagrams etc. for early 90’s S13? I’m starting on the engine/tranny swap into my '68 roadster, and that kind of reference material would be invaluable.
Thanks in advance…Teesun68

http://forums.son240sx.ca/viewtopic.php?t=4628