They go by carb model # but in those years, 52-54 seem to be close enough to interchange. Its hard to say, because in this case hollander is being # specific to the interchange. It doesn't say basically if it bolts on it will work.. BTW, you could own your own Hollanders for your car, I'm selling one in the misc for sale in the classifieds.
the superior interchange book (which is like a hollander) shows carb #126 52 to 55 caddy to be the same and it has a gm number of 7004500
The Jalopy Journal
