Thanks everyone! I fairly certain the vehicle has a 10 bolt rear end. I am out of town on business but will check the axle stamping and fuel lines over the holiday weekend and report back. I was told the car originally came with a Powerglide. From reading on this site, it seems all SS350s came with the 12 bolt rear ends but the link/quote below from Hemmings seems to be at slight odds with that. I'm not sure of Hemmings sources though.
http://www.hemmings.com/magazine/mus/2011/12/1967--69-Chevrolet-Camaro-SS/3706601.html
"There is some discrepancy about the rear axles used in Camaro Super Sports. The 12-bolt axle seems to be prevalent in all Super Sports, although factory literature suggests that SS 350s with automatic transmissions would've been equipped with 10-bolt axles. That seems to be the case with Powerglide-equipped SS 350s, but not those with Turbo Hydra-Matic transmissions. "
http://www.hemmings.com/magazine/mus/2011/12/1967--69-Chevrolet-Camaro-SS/3706601.html
"There is some discrepancy about the rear axles used in Camaro Super Sports. The 12-bolt axle seems to be prevalent in all Super Sports, although factory literature suggests that SS 350s with automatic transmissions would've been equipped with 10-bolt axles. That seems to be the case with Powerglide-equipped SS 350s, but not those with Turbo Hydra-Matic transmissions. "

