Well that depends on what you think you'll break over the coming years. It's also dependant upon those who own the tooling being willing to part with it. Based upon some members experiences bodywork is as important as suspension components but break either and all you're left with is a pile of parts that might be of use keeping a dwindling number of cars on the road.
My suggestion would be to get the current owners together to form a consortium willing to finance what's available. No interest from me obviously. You'll need someone willing to store the parts, someone to manage finances and someone capable of remaking whatever is needed from the tooling available.
Parts that need fabrication can probably be remade from pattern - you might not need all the tooling - but I'm sure that there will be some highly specialised parts that are unique!

Good luck!

Guy