Where to buy Rx-3 Suspension?

[RacinAlt]

So I have picked up a \'73 RX-3.
It was setup to road race and has spent most its life as a CSP / IT car.
We have put it back to street trim, but left all the go fast parts on it.
The thing I need is the suspension is the orgional aftermarket suspension from 30 years ago.
What is available out there for the RX-3, I am having trouble finding suspension parts.
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[ROTORMAT]

Sweet looking car mate, is it in the U.K?