admittedly most of the epicness of this sound comes from the driver:
http://www.youtube.com/watch?v=rh6bwZ4ooTI
there are a lot of amazing sounds linked from this thread but not very much of what he had: pushing to the absolute limit
you can feel the driver's emotions through the sound, especially some downshifts like urgent (:45), really pissed off (1:08) and insisting, slightly fearful, searching, almost praying (:13). then there is a snarling acceleration at 1:05.
and the upshifts... well, damn. (from what i understand these gearboxes had no auto-clutch, but some modified rings to assist faster clutchless shifting, at the cost of skill required)
now if only there was a video with this driver with the ferrari V12