I am converting an old EA82 from carb to SPFI. The heads had two metal pipes, one either side, that I'd assume are for EGR. Either way, the ports for those metal pipes go all the way into the exhaust port flange so they'd cause exhaust leaks if I just bolted up my exhaust.

I'd assume these ports need to be blocked off with a plate and some sealant, correct?

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P.S. I'd still keep all my emissions equipment in place for the SPFI setup, I'm just looking to adapt the carb EGR system to the SPFI system.

 

I did this a million years ago. Just make a simple plate. I cut mine from something i can’t recall but the metal was blued. Might have been an old blade but anyways i made it somewhat diamond/football shaped and drilled the two hole, times two pieces. 
 

In my state it was never an issue with emissions. 
 

Block them off and i would just go for a metal to metal seal. That’s one heck of a hot spot so not really sure which or any sealant could be used. Maybe cut up part of and old exhaust gasket? But mine worked fine metal to metal.