I need to know what is the largest gasket to port my lower intake to on my L98?
Whatever you are suposed to use on aluminum doesn't matter . I just need a gasket part number for size purposes.
Can you buy the big mouth base gaskets only?

Please help.

I used FelPro.I think the instructions that came with the Standard Abrasives porting and polishing kit recommended it.

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We need Perry Mason