NON-EGR INTAKE MANIFOLD on EGR ENGINE

Guys,
I've got a opportunity to pick up a Edelbrock non-EGR #2176 intake for cheap, but my son's '74 Duster has an '86 EGR 318 engine swap on-board...I'm not educated enough in small-block wisdom (yet---I'm learning) to know if I could use the non-EGR intake on his engine, but I'd hate to lose the deal, if I could possibly use it.

We have removed and/or disconnected all the emission parts from the original '86 system (as well as all the lean-burn crapola--we swapped out the distributor), and have installed a new Edelbrock #1406 600 cfm non-EGR 4-barrel carb on the stock cast iron manifold (we are having to use an adapter plate, though)....it runs really well at this time (The reason we are having to change out the stock cast manifold, is because the water temp sending unit hole has split across the top of the manifold, and is leaking like crazy--long story).

I was thinking it would be a matter of using a different intake gasket set for installation of the non-EGR manifold, or a block-off plate of some type, but I'm not sure if it would leave that small center intake passage in the head, open for leaks.

Can I use it?
Rob