I know there are a lot of threads on torque converters but I am looking for some advice. I am getting ready to put the 440 and the 727 back in the '67 GTX and I know nothing about converters. The car has a Sure Grip diff but the gear ratio tag is no longer on it. I see there are several different sizes 9", 10", 11" available. Just looking for something stock with stock stall. Anyone have a brand and part number to order? Thanks!