You can get the COpper gaskets from Jeff Tudor at
http://www.tudorsperformance.comTHey are ok, but do not work with the cool head.
Put the larger head studs in it and o-ring it, then use a stock head gasket and a cool head, you will never have a blown top end again.
5 years and would still be running if the crank didnt snap in 2!
If you need more info, email me.