Unfortunate answer (at least for truck owners). Carter made a number of versions of these carburetors (different sizes) as aftermarket for automobiles; and the Carter BB-1 is one of the better updrafts ever built anywhere. Some of the individuals who drive their old cars pay prices for these (to replace some of the units built in the 'teens and 'twenties) that will make the truck lover cringe.

Condition, and which BB-1 are two important criteria.

Jon.

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop