<VV> IECO manifols for LM 110

[Rodney Sampson]

All:
  Recently obtained an IECO 4bbl manifold for my LM 110 engine.
   It's the one where the tube bolt to the casting and the casting has 
passage for
      some circulating warm liquid.
   My issue is, when the manifold is bolted together it's about 1/4" too 
far between the bolt holes( i.e. I have to
       bend the carb studs out for tis to fit).
    Question, is this truly for the LM engine ?
    My head castings indicate that it's a 66.
    
Thanks
Rodney Sampson