Driveshaft Length

Can anyone tell me the driveshaft length on a 1963 Dart Convertible? I don't have the original and can't find the length in google land.
Mine is exactly 57" from the rear yolk to where it goes into the adapter that mounts to the transmission. But I can't tell how long that part of the shaft is because it's inside the housing. I'll add a photo when I check again tomorrow.