Is there any reason why not to use an aluminum gear over laminated?The best gear available is a bronze gear that Dan McEachern (510-532-8228) makes and sells. His web site is dmgears@yahoo.com. I've used his gear in a B motor with an OHV conversion and it is run hard with no problems. It may be worth a call to him, but the laminated one that Snyders sells should last another 80 years in your car.
I think it is paper as you said, I bought from Mac's.Use gasket sealer instead of contact cement, either the silicone or non-silicone variety. The original paper gasket was not that thick. Could you be a little more specific about what you mean by "cardboard".