1948 Chevy Fleetmaster speedometer cable length?

Ok, so I basically forgot to measure the length of cable i need for my 1948 Chevy Coupe. It has the original column, speedometer is in the original spot but it has a Turbo 350 trans in it. Due to the weather thats coming and the fact i live in NJ and dont have room to store it in my house going to measure it at the garage its stored at is a pain since i wanted to order it soon so i could have it for this up coming weekend. basically does anyone know the length i would need for this? i know its a long shot, but thanks.

 

Stock length for a 48 Chev coupe is 61-1/8 long, with a Th350 you would want to go a little longer.