[Excaliber]

I've never seen those heads but am wondering if a set of high riser intake gaskets might be a closer fit than and standard FE gasket. The high riser ports are very tall and they require specific intake gaskets. I don't use anything fancy, just what ever NAPA can order, typically no steel insert, just regular gasket material. Never had a leak and I've had the heads off several times (always used new gaskets of course).