EGR valve modification

Hello everyone, I'm new to this forum and have a question for you guys. I have a 95' mitsubishi diamante LS DOHC V6 24 valve with the EGR valve. I recently purchased a polished valve cover & upper intake plenum but realized the plenum didn't have the EGR connection, I was wondering if I could just replace my old plenum with the new one and somehow block the EGR and possibly remove it from my engine. Do I need to modify anything else or will removing/blocking the EGR be enough? I read somewhere such modification will alter the O2 reading and this will cause problems with idling or something like that...help please!!!!

Ah, I love old cars.