Carberator Gasket Question

[downsr]

I have a rpm air gap dual plane intake with a 750 holley carb. What gasket do you use?
It came with gasket that was open but part of the gasket went between the two openings
on the intake. I cant find the type of gasket that elderbrock supplied .Hope this makes sense

 

[nm9stheham]

Mr Gasket #55 for the larger bore size in the Holley squarebores.

I usually find them at the local O'Reilly's parts sotres, along with the smaller bore #57's.

Edit: BTW these are 4 hole gaskets but have a divider down the center.