Buying a top-shelf torque converter properly matched to your combination by an expert in the field is one of the best investments you can make in a car with an automatic transmission.
My most recent purchase of a Circle D torque converter was this past week. The main issue the tech was concerned with using my upcoming combination of specs was for the idle not to be affected when dropping the car into gear. The stall speed is intimately intertwined with the idle rpm drop. He knew exactly how the various shapes of the internal components interact with each other with a given cam specs( seems mainly duration at .050" and LSA seem to be his main focus, but i'm no expert.
