Is there such a thing as a 5000 stall converter that is streetable ?

Our buddy has 9.5 ptc 3800 stall in a full weight 70 dart with 3.23 gears and it drives like stock, you would never guess it is anymore than an 11".
I also have a PTC 10" 3600 in one of my 70 Chargers with 4:10's and it cruises like stock as well.