In their muscle car comparo (1966?) Car and Driver found the Olds 442 to be the best handler on the Bridgehampton road course. Must have been the rear sway bar they pioneered for A-bodies that year?
The GTO, Fairlane and Cyclone entries blew their engines due to "over-tuning" by Royal Pontiac, Holman & Moody and Bud Moore, and were disqualified.
The Buick Gran Sport and SS396 Chevelle were legal, pretty, and ran at the tail of the pack.
Chrysler declined to participate. Too bad, their Belvederes and Coronets didn't have "GT" versions yet and were kind of plain (ugly?), but they handled well with front torsion bars, and equipped with Hemis? MIght have been a slaughter.