Tnx Basil. With the '68 as you know, there is a 'heater tube" that goes from the exhaust to preheat the intake manifold...seems like the Fed's were much too awake at nite to come up with yet another required mod.
Long story - sorry. To the point, looks like I'll need a "blanking plate" to install on the intake manifold. Saw one a few years ago, looked like it had a raised contour -are there any channels or baffles on that part of the intake manifold that would require this "bump-up" on the plate, or can I just fabricate same out of a small piece of steel plate? Appreciate your help.
John