Rear Main Seal

KnuckleDuster said
Greg has no more 360 main seals and will not be getting anymore.
I asked about the next best option, he said try to find a Viton seal.

Any suggestions guys?
I see Cometic has one for a Magnum, are LA and magnum seals the same?

So Superformance isn't making any more 360 main seals? That seems incredible to me.