“PermaDry”Timing cover gasket

Prepping the magnum engine. On tear down I noticed the engine still had “oem” gaskets.the timing cover in particular ,I’ve seen paper/composite gaskets before but the one it had was a pretty thick silicone/ metal gasket. I’ve ordered the gasket set from scram speed but it came with a paper timing cover gasket . It being a magnum I thought all the gaskets have been “upgraded” as like the oil pan. I ordered another timing cover gasket (felpro PermaDry) it is a bit closer to what it originally had but just not as thick. The paper gasket is ~.025 - .030 thick and the permadry (steel/silicone) is about ~.022 -.025 thick . Has anyone used the permadry gasket? Does anyone know what the oem gasket part number is? .