I swapped out the transmission in my son's 91 244 with an AW from an 87 turbo about a month ago.

Personally I would keep the torque converter with its original transmission, but someone who has more experience than I do would provide better information.

If the kickdown cable is moving freely in the replacement I would spend some time dripping some trans fluid in at the end while holding it up with something so gravity will work for you in lubricating the cable.

If I were you I would replace the front seal, the two shift rod seals, and the rear seal. If the bushing is in good condtion without much lateral slop it will be OK, but it is never easier to replace than now.

The linkage bushings are easy to replace now as well. Make sure the linkage rod is not rusted so as not to be able to be adjusted once the transmission is in place.

Now is the time to be sure all the wiring associated with the overdrive is in good shape. Replace if necessary.

Make sure that the solenoid makes a nice audible "snap" when you apply 12v. If the top of the solenoid is starting to break up (or even if it is not) take some silicone RTV and cover the entire top to encase it and seal out moisture. Hang onto the solenoid from the bad transmission.

Good luck.

Randy