If you want some more feedback on blowers for the S197, check out modularfords.com.
Saleen vs Whipple
http://www.modularfords.com/forums/showthread.php?t=104718&highlight=saleen+supercharger
Saleen Supercharger Owners (power/times/boost other mods...)
http://www.modularfords.com/forums/showthread.php?t=87836&highlight=saleen+supercharger
General Supercharger Recommendation
http://www.modularfords.com/forums/showthread.php?t=97967&highlight=saleen+supercharger
Saleen vs Whipple
http://www.modularfords.com/forums/showthread.php?t=104718&highlight=saleen+supercharger
Saleen Supercharger Owners (power/times/boost other mods...)
http://www.modularfords.com/forums/showthread.php?t=87836&highlight=saleen+supercharger
General Supercharger Recommendation
http://www.modularfords.com/forums/showthread.php?t=97967&highlight=saleen+supercharger