You're right on with your comment 954Stealth, "the track and venue itself holds much pedigree and history". Although I can't be there this year either, I'm happy to say I've seen my share including the first iteration of the 6 hour race in '68 (it was also the last year of the SCCA's USRRC).
Ickx & Bianchi surprised the Porsches in the (Gulf) Blue John Wyer GT40 (Mark Donohue dominated Saturday's USRRC race in the Sunoco (Blue) McLaren M6A).