John
I have seen other valley pan gaskets marketed. When I have taken a close look on the metal gaskets it invariably says it is manufactured by Fel-pro.
Before installing my valley pan gasket, I called Fel-pro. They recommend installing the 2-piece intake gasket first then the metal valley pan gasket. According to them this ensures a better seal.
Anyway, you should not have to trim the metal gasket.
Bohdan
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