My "good" converter (the one that works best) is a Turbo Action that has been beat on and never missed a beat. It is much more fun on the street to have a "tight" converter IMO.
Surprising how much converter size affects shift hardness as well.
Unless you have gobs of torque and gear then it's ...............
so how is it affected ? smaller diameter and higher stall = harder, or the other way around ?