time2flyg4,
There area lot of very knowledgeable people on this site, unfortunately I am not one of them, but you would most likely get better responses if you posted this in the All Cobra Talk Forum.
That Pinto rack doesn't sound great to me. Many people used the Mustang rack and pinion steering and that is what I had in mine when I had it and I never had a problem of any kind with it. It turned easily except with the racing tires on and at very slow speeds and I never had power steering. But with street tires it turned very easily at any speed. What kind of motor do you have and how much weight is on the front end?
Ron