1999 Sc400 Torque Converter

[Astatula SC300]

I just bought a '99 SC400 with 46K miles. This is my second SC, I also have a '98 SC300. They are great cars.

The SC400 runs like a new car with no problems at all. I'm just not happy with the way it shifts. What type of torque converter will work in this car? I've seen alot on this site about the older SC400's, but not much on the 1998 thru 2000 models.

Also, does any body know anyc good shops in central Florida that would do trans work on the SC400.