1937 International C1 pickup fuel tank sending unit ohms

So, just finished up restoring a fuel tank for a 1936 IHC C1 pickup and now I need a sending unit. Unfortunately, I do not have the truck here and my customer is 100 miles away. Does anyone out there know what empty and full ohms might be so I can get to modifying a universal sender to do the job. Customer says it is a 6V system with "positive ground"? Any help would be greatly appreciated. If the truck was here I could check it myself but don't really want to put on over 200 miles round trip to deal with this.
Thank you in advance for any answers you guys can supply.
Scott

 

....You need to ask questions like this on the main discussion forum.

 

Oops, sorry, thank you! Merry Christmas!