I caught this sweet, and slightly tattered, 1968 Pontiac Firebird 400 at Lady Bird Lake in Central Austin. It has the Ram Air option with functional hood scoops, higher flow heads with stronger valve springs, and a hotter camshaft, turning out  335 hp. The 400 cu in V8 is an enlarged 389 ci in V8 used in earlier Ponchos. Pretty quick at 0-60 mph at 5.5 seconds, reaching the 1/4 mile, in 14.2 seconds at 100 mph.