Sorry for the old thread resuscitation.
I just now got the j pipe separated to replace the gasket, my question is do I have the right part? The original on my truck is pretty much disintegrated. All the diagrams I see seem to show a gasket with a round opening. On the part I received (9 months ago) it is not round. Can anyone who has replaced this thing offer some insight. It seems the part is now listed as NLA just to make life completeView attachment 1314193
that gasket looks like the one that attaches the EGR input to the intake manifold under the carb