My '95 Subaru Legacy wagon is leaking transmission fluid from between the trans and the rear drivetrain. I think the seal between the two has gone bad and started to leak. How hard is it to change this seal, if this is the case?

Shouldn't be too bad. You should be able to drop the driveline, pull the seal, put a new one back in, and reassemble.

yah, i've done it before. it's not too bad at all. really not much too it, it's just annoying working from under the car and you don't have great access to the rear extension housing (where the seal is). you'll have to remove the driveshaft to replace the seal. when you do , make sure the driveshaft doesn't have any excessive rust or anything on the input shaft that could compromise your new seal. it shouldn't unless it's been replaced before. and be careful sliding the driveshaft into the extension housing when youre done, you dont' want to bung up your new seal.