You could put a spacer under the new carb. I would not do that myself. I would ether do;
Bore the intake holes out for the larger butterflies of the larger carb
OR
Get a TQ intake and large TQ carb.
IF staying with an OE look, becareful of what carb you pluck from another engine. The early 440 engines did indeed come equipped with a small AFB.
Make sure you get the "750cfm" AFB or AVS, which would be my choice, AVS that is.