If it got wrecked badly enough to total the car, I would not trust the transmission to operate properly…Honda Civics have to be BADLY wrecked to be totaled and parted out. People are willing to pay premium prices for used Civics and they fly off the used car lots as fast as they can get them. That means rebuilders actively seek out wrecked Civics to rebuild. It also means decent used transmissions will be hard to find…Todays automatic transmissions are computerized, another potential nightmare…Good Luck…