It's a lovely idea - a fabulous idea but if we can't keep Centrurii running these days (with a some supply of parts and a continuing, unbroken though thready supply of expertise ) what realistic hope is there for an airworthy Sabre with none of either? Theybstruggled to keep the thing running even in the day, and binned it the instant it became unnecessary to the war effort.
I'd guess we might yet see a couple of brave but futile test flights at prodigious expense only to see the aircraft grounded and condemned to static museum status.
I just can't imagine a Sabre in today's risk-averse climate allowing more than that to happen, even if they manage the incredible feat of getting one into airworthy status in the first place.
I hope i'm wrong.