Quote: There should have been 2 blockoff pieces made of the same material in the box!!
Never seen one like that
I did, way back (decades) & I'm thinking it was Felpro but wouldn't swear to it and might not even be available
Yep! Felpro... I purchased one a couple of years ago from Napa. Could have been old stock?? But it did have 2 pieces that plugged the heatriser ports.
i got one of those about 2-3 years ago, and the plates that come with the valley pan are way too thick. lucky my current heads don't have the heat crossover.