1994-2003 Ferrari 333 SP 

Text and images copyright Michael J. Fuller

The standard Ferrari flank cooler inlet.
The "Southgate" side inlet panel that first appeared at Le Mans 1996 as part of the Scandia-developed LM kit.  The exit from the trailing edge of the wheel well is larger and leads more directly to the cooler inlet itself.  In turn there is more side splitter area exposed.  This modification produced less drag for increased downforce.
Some Ferrari teams ran a dorsal fin on the rear engine cover.  This trend actual came from Indy Car racing circles.   In theory, in yaw conditions, a vortex is shed of the top of the dorsal fin helping to improve downforce on the rear wing.
ęCopyright 2003, Michael J. Fuller