440 is a raised block and your 383 is a low deck big block so a 440 intake will not mount to a 383.
Edelbrock does make a 6 pack intake for the low deck big blocks which are 361-383-400. Raised blocks are 413-426-440 and a very very rare 383 that was available in the 50's.
However, I am assuming that this is a more common 60's and up 383...