I purchased and rebuilt a superquad 9800 for my RB project. I found a master rebuild kit that came with a thin paper 4 hole manifold gasket. I also purchased a .320 thick base plate gasket. I have an Edelbrock 440 performer with the spreadbore opening. My question is do I use the thick baseplate gasket only, or do I use the thin paper on top of it as well? The baseplate gasket fits around the permiter of the spreadbore opening perfectly, and the paper gasket aligns with the carb bores...
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