The WCFB base is smaller than
all other Carters, and is a square-bore versus a spread-bore. You'll probably need to find a small Holley to fit that, as WCFB carbs are expensive and very scarce. I had a factory cast dual-quad intake that used the same carb. I ended up selling it because it was going to be too expensive to source two carbs, the right linkages and all that.
You can tell the general era of a Chrysler part by the number. As a general rule, the seven-digit series started in the 1950s with a ONE. Sixties parts started with TWO, Seventies parts start with either a THREE
or a FOUR. This is a late Fifties intake, as I stated earlier. Note that a part might be used over a period of years unchanged, so you will encounter parts that carry over from one decade to another.
A great and very informative tutorial on Chrysler part numbers here:
440 Source.com - Info on Chrysler's casting and part numbering system