Could you tell me what is the correct fitting for the vacuum port on a 04C 1969 Z10 with 350 L48 engine with Air conditioning, manual transmission and of course RS. Did this engine use the Vacuum Power brake Pipe? Or did the hose go directly to the intake fitting? Did the fitting have 1 or 2 additional vacuum ports other than the threaded one going to the brake power booster? It is illustrated in the 1969 Camaro assembly manual under J50 A5, but I can not determine which fitting is correct for my car. Thanks for your help