.... I swapped from a tremec to an Art Carr AOD and love it. Specially when I added the blower.
A well built AOD and converter will set you back a few $$$$ though. Some days when I just want to cruise I put it "D" and ride and flip OD on when I get up to 55mph. And 97% of the time, I manually shift it.
But don't swap cause people on here say swap, do what you want. If you like the stick I say keep it a stick and just get a better 5-speed to handle the power.