1.8 or 2.0? The second manifold isn't a BJII manifold its a 626.
If the former don't worry about, if the latter then yeah could be an issue. The port is used for EGR, see the two holes behind the port in your 2nd photo. In the FS theres a module attached that opens and closes allowing Exhaust gas to recirculate back into the intake, to lean the car out while at constant rpm. (i.e. highway driving). On a 1.8 there is a blanking plate that covers this as the 1.8 doesn't utilise EGR.
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