thermoquad manifold, do i need these ?

I have a stock spread bore thermoquad intake manifold on my 360, looking inside my manifold I notice I have whats called egr floor jets inside my manifold. since I'm not running egr stuff in my engine do I need these ?
hi, drill and tap for allen pipe plug. use Loctite. they will stay in. I did my 340 intake this way. as for flow, the71 n 72 without egr, was .05 faster over the 73 intake with egr mounds .just food for thought.