There is a 57 intake manifold on eBay now with a vaccum connection in front of the carburetor( ECZ9425 B).  My intake does not have that vaccum connection. 

Also, I removed a two barrell 57 intake from my 55.  On that intake I had a 56 Fairlane Bellcrank.  When I installed the 56 Bellcrank on my current 57 4-bbl intalke, ECZ9425 B, the bellcrank would not fit unless elevated with anbout 4 washers???  What do I have?

Thanks!!

Gary