Porsche 911SC, The Essential Companion, Adrian Streather, Veloce Publishing, 2005  ISBN: 1-84584-002.  Probably the most complete reference on 911SCs.

Porsche 911SC Service Manual, Bentley Publishers, 2000, ISBN: 0-8376-0290-4 (Special note:  This is a great shop manual, but it is not always correct!  It was originally written for the 1984-89 Carreras, and still has some left over Carrera info in it that should have been modified -- for example, to pull off the front bumper, you don't have to remove the turn signal light assemblies)

101 Projects for Your Porsche 911, Wayne R. Dempsey, MBI Publishing, 2001ISBN: 0-7603-0853-5

Porsche 911 Performance Handbook, 2^nd Ed., Bruce Anderson, Motorbooks International, 1996  ISBN:  0-7603-033-X

How to Rebuild & Modify Porsche 911 Engines, 1965-1989, Wayne R. Dempsey, Motorbooks, 2003  ISBN:   0-7603-1087-4

Porsche 911 Automotive Repair Manual 1965 thru 1989, JH Haynes, 1990  ISBN: 1-85010-6983

Check out the February, 2007 issue of Excellence Magazine for Dan Proudfoot's purchase/journey from CA (US) to ON (CA)!