What tranny is compatible with my car?

[kinggrimwood]

My transmission went out at only 200,000 miles, and i need a replacement.
I have a 1992 SC400.
I've had trouble finding out if the transmission is the same as those of other years or of the sc300 as well.
Theres not a broad market of exactly model and year used transmissions for me to look at, so i'm trying to find out if i have a bigger market to choose from.
Jeremy

 

[Lextreme II]

there are few variations on the 340E. I think the electronics will be little different.