....................Less converter is a my favorite part... Most any bb turbo can do the job with a 3200 stall .. My car spools instantly with the 63 journal bearing.
Since you did not define "the job" or how you use your car, but the proper converter stall is needed for more than instant spool?
Most every owner has specific performance goals which may be street or strip, or both, and there are many variables in the combination that must be met to achieve those goals.
With my BB70 turbo in my race car or the TE-45A in my street car, either would not even come close to my expectations using a 3200 stall converter, and would not even consider a 3200 with a 63 turbo.
You may like your 3200 converter, but with my street car it is almost impossible to spin the tires [295x15] leaving a stop light or any time at full throttle because the 3800 converter is loose enough to accelerate the car very strong w/o spinning the tires.
I am just pointing out you cannot make a specific statement as a fact for everyone because it works for you, especially as every driver and car is different.
For example, your TTA has a different rear end ratio as well as different tires and suspension than a Regal.
To address the original post, the stroker engines I have built for my use did not show a big change in normal spirited driving with all else being the same, but at higher RPM they do pull a little better.