2 X 4's for a y block part numbers

Long shot , anyone have the part numbers handy for original 2 X 4's holley tea kettle carburetors ? The ones on the base plate.

 

R-1268a edb-9510c edb-c - 1956
r-1434a ecj-9510ab b7a-9510p - 1957
r-1437a ecj-9510aa ecj-aa - 1957

 

Both the 1956 carbs were the same.

In 1957:

With standard transmission, (2) R-1434's were used.
With auto transmission, the R-1434 was the rear and R-1437 was the front.

All three sets of carbs used chokes on both front and rear.

There were also a few sets of early experimental units in 1956 using a different intake that used the Carter WCFB 2361s, but I can find no documentation that any of these test vehicles were ever sold. On the other hand, I can find no documentation that they were destroyed. Since Holley came in with a less expensive bid.......

Jon.