new guy needs advice on carb on M37

Hello to all..... I have a old carter carb on my M37, I think circa the civil war, I would like to replace it with a new/rebuilt, but this carb has no numbers or model indicated. Any suggestions on a replacement, such as make, year, & so on? Other than conversion to 12V it's pretty much stock. Thanks........
Old guy

carb

Hi
You can try Sid Beck. je is Ace Surplus in Texas
John Bizal, He is Midwest Military in Minn.
Or Vintage power wagons

All are on line
Ernie

The original carb was a Ball & Ball ( later bought out by Carter ) "ETW1"