I have a 460\535 with the victor jr manifold supplied by Ford. I think it is fun and a large part of the hobby to try to design your engine / car package for maximun performance. This being said unless you are planing to compete against others or a clock, the difference in the torque generated by the various manifolds in a car as light as a cobra makes little difference on the street. With the stock 15" wheels and street tires it is hard to utilize 75% of the torque at low RPMS. There has never been a time when I leaned hard on the throttle in the lower gears an smoked the tires and thought "Gee I wish I had more torque". Unless you are going to change tires, suspension etc. to maximize competition performance, use the manifold that fits without major and expensive body and engine mods as long as it gives you good streetable performance.
